diff --git a/README.md b/README.md
index 0f373c8..782d85f 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,15 @@ the early 2010s. Made with $\LaTeX$.
 
 ![](./.github/img/notes.avif)
 
+## Progress
+
+- [ ] [Mathematics](./latex/math/math.tex) (WIP)
+- [ ] [Physics](./latex/phy/phy.tex) (WIP)
+- [ ] [Neuroscience](./latex/neuro/neuro.tex) (WIP)
+- [ ] [Electrical Engineering](./latex/ee/ee.tex) (WIP)
+- [ ] [Chemistry](./latex/chem/chem.tex) (WIP)
+- [ ] [Computer Science](./latex/cs/cs.tex) (WIP)
+
 ## How to setup
 
 1. Setup [devenv](https://devenv.sh/getting-started/)
diff --git a/latex/chem/chem.tex b/latex/chem/chem.tex
new file mode 100644
index 0000000..701cb52
--- /dev/null
+++ b/latex/chem/chem.tex
@@ -0,0 +1,68 @@
+\documentclass[11pt]{book}
+\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
+\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
+\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
+\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
+\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
+\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
+\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
+\usepackage{kotex}       %
+\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
+\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
+\usepackage{tikz}        %
+\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
+\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
+\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
+
+\usetikzlibrary{tikzmark,fit}
+
+\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
+\titlespacing{\chapter}{0pt}{-20pt}{0pt}
+
+\setlist[description]{leftmargin=15pt,labelindent=0pt}
+
+\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
+\newcommand{\gh}{
+  https://github.com/pompydev/cheatsheets/tree/\HEAD
+}
+
+\newcommand{\cc}[1]{
+  $\vcenter{\hbox{#1}}$
+}
+
+\begin{document}
+
+\pagenumbering{gobble}
+
+\centerline{\large pomp's}
+\null
+\centerline{\LARGE \textbf{Chemistry}}
+\null
+\centerline{\large Cheat Sheet}
+
+\vspace{236.5pt}
+
+\columnratio{0.63}
+\begin{paracol}{2}
+  \vspace{21pt}
+  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
+
+  git reversion:\gitrevision
+
+  made with \LaTeX
+  \switchcolumn
+  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
+\end{paracol}
+\newpage
+
+\tableofcontents
+\newpage
+
+\pagenumbering{arabic}
+\chapter{Atoms}
+\section{Periodic Table}
+
+\chapter{Biology}
+
+\end{document}
diff --git a/latex/cs/cs.tex b/latex/cs/cs.tex
new file mode 100644
index 0000000..47a3018
--- /dev/null
+++ b/latex/cs/cs.tex
@@ -0,0 +1,69 @@
+\documentclass[11pt]{book}
+\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
+\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
+\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
+\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
+\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
+\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
+\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
+\usepackage{kotex}       %
+\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
+\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
+\usepackage{tikz}        %
+\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
+\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
+\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
+
+\usetikzlibrary{tikzmark,fit}
+
+\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
+\titlespacing{\chapter}{0pt}{-20pt}{0pt}
+
+\setlist[description]{leftmargin=15pt,labelindent=0pt}
+
+\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
+\newcommand{\gh}{
+  https://github.com/pompydev/cheatsheets/tree/\HEAD
+}
+
+\newcommand{\cc}[1]{
+  $\vcenter{\hbox{#1}}$
+}
+
+\begin{document}
+
+\pagenumbering{gobble}
+
+\centerline{\large pomp's}
+\null
+\centerline{\LARGE \textbf{Computer Science}}
+\null
+\centerline{\large Cheat Sheet}
+
+\vspace{236.5pt}
+
+\columnratio{0.63}
+\begin{paracol}{2}
+  \vspace{21pt}
+  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
+
+  git reversion:\gitrevision
+
+  made with \LaTeX
+  \switchcolumn
+  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
+\end{paracol}
+\newpage
+
+\tableofcontents
+\newpage
+
+\pagenumbering{arabic}
+\chapter{ISA}
+\section{x86-64}
+
+\chapter{Cryptography}
+\section{RSA}
+
+\end{document}
diff --git a/latex/ee/ee.tex b/latex/ee/ee.tex
new file mode 100644
index 0000000..930d9c0
--- /dev/null
+++ b/latex/ee/ee.tex
@@ -0,0 +1,68 @@
+\documentclass[11pt]{book}
+\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
+\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
+\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
+\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
+\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
+\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
+\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
+\usepackage{kotex}       %
+\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
+\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
+\usepackage{tikz}        %
+\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
+\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
+\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
+
+\usetikzlibrary{tikzmark,fit}
+
+\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
+\titlespacing{\chapter}{0pt}{-20pt}{0pt}
+
+\setlist[description]{leftmargin=15pt,labelindent=0pt}
+
+\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
+\newcommand{\gh}{
+  https://github.com/pompydev/cheatsheets/tree/\HEAD
+}
+
+\newcommand{\cc}[1]{
+  $\vcenter{\hbox{#1}}$
+}
+
+\begin{document}
+
+\pagenumbering{gobble}
+
+\centerline{\large pomp's}
+\null
+\centerline{\LARGE \textbf{Electrical Engineering}}
+\null
+\centerline{\large Cheat Sheet}
+
+\vspace{236.5pt}
+
+\columnratio{0.63}
+\begin{paracol}{2}
+  \vspace{21pt}
+  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
+
+  git reversion:\gitrevision
+
+  made with \LaTeX
+  \switchcolumn
+  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
+\end{paracol}
+\newpage
+
+\tableofcontents
+\newpage
+
+\pagenumbering{arabic}
+\chapter{Units}
+\chapter{Components}
+\section{Resistors}
+\subsection{Resistors in series}
+
+\end{document}
diff --git a/latex/math/math.tex b/latex/math/math.tex
index f12575b..108a04d 100644
--- a/latex/math/math.tex
+++ b/latex/math/math.tex
@@ -19,9 +19,7 @@
 \setlist[description]{leftmargin=15pt,labelindent=0pt}
 
 \CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
-\newcommand{\gitrevision}{
-  \StrLeft{\HEAD}{7}
-}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
 \newcommand{\gh}{
   https://github.com/pompydev/cheatsheets/tree/\HEAD
 }
diff --git a/latex/neuro/neuro.tex b/latex/neuro/neuro.tex
new file mode 100644
index 0000000..ea6e08b
--- /dev/null
+++ b/latex/neuro/neuro.tex
@@ -0,0 +1,68 @@
+\documentclass[11pt]{book}
+\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
+\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
+\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
+\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
+\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
+\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
+\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
+\usepackage{kotex}       %
+\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
+\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
+\usepackage{tikz}        %
+\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
+\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
+\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
+
+\usetikzlibrary{tikzmark,fit}
+
+\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
+\titlespacing{\chapter}{0pt}{-20pt}{0pt}
+
+\setlist[description]{leftmargin=15pt,labelindent=0pt}
+
+\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
+\newcommand{\gh}{
+  https://github.com/pompydev/cheatsheets/tree/\HEAD
+}
+
+\newcommand{\cc}[1]{
+  $\vcenter{\hbox{#1}}$
+}
+
+\begin{document}
+
+\pagenumbering{gobble}
+
+\centerline{\large pomp's}
+\null
+\centerline{\LARGE \textbf{Neuroscience}}
+\null
+\centerline{\large Cheat Sheet}
+
+\vspace{236.5pt}
+
+\columnratio{0.63}
+\begin{paracol}{2}
+  \vspace{21pt}
+  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
+
+  git reversion:\gitrevision
+
+  made with \LaTeX
+  \switchcolumn
+  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
+\end{paracol}
+\newpage
+
+\tableofcontents
+\newpage
+
+\pagenumbering{arabic}
+\chapter{Nervous system}
+\section{Neuron}
+\section{Brain}
+\section{Vertebral column}
+
+\end{document}
diff --git a/latex/phy/phy.tex b/latex/phy/phy.tex
new file mode 100644
index 0000000..0662c38
--- /dev/null
+++ b/latex/phy/phy.tex
@@ -0,0 +1,66 @@
+\documentclass[11pt]{book}
+\usepackage[paperwidth=90mm,paperheight=140mm,margin=5mm,bottom=6mm,footskip=4mm]{geometry} % https://mirrors.ctan.org/macros/latex/contrib/geometry/geometry.pdf
+\usepackage[hidelinks]{hyperref} % http://mirrors.ctan.org/macros/latex/contrib/hyperref/doc/hyperref-doc.pdf
+\usepackage{amsfonts}    % http://mirrors.ctan.org/fonts/amsfonts/doc/amsfndoc.pdf
+\usepackage{amsmath}     % http://mirrors.ctan.org/macros/latex/required/amsmath/amsldoc.pdf
+\usepackage{catchfile}   % https://mirrors.ctan.org/macros/latex/contrib/catchfile/catchfile.pdf
+\usepackage{enumitem}    % http://mirrors.ctan.org/macros/latex/contrib/enumitem/enumitem.pdf
+\usepackage{fontawesome} % http://mirrors.ctan.org/fonts/fontawesome/doc/fontawesome.pdf
+\usepackage{kotex}       %
+\usepackage{paracol}     % https://mirrors.ctan.org/macros/latex/contrib/paracol/paracol-man.pdf
+\usepackage{qrcode}      % http://mirrors.ctan.org/macros/latex/contrib/qrcode/qrcode.pdf
+\usepackage{tikz}        %
+\usepackage{titlesec}    % https://mirrors.ctan.org/macros/latex/contrib/titlesec/titlesec.pdf
+\usepackage{xcolor}      % http://mirrors.ctan.org/macros/latex/contrib/xcolor/xcolor.pdf
+\usepackage{xstring}     % https://mirrors.ctan.org/macros/generic/xstring/xstring-en.pdf
+
+\usetikzlibrary{tikzmark,fit}
+
+\titleformat{\chapter}[block]{\huge\bfseries}{}{0pt}{}{}
+\titlespacing{\chapter}{0pt}{-20pt}{0pt}
+
+\setlist[description]{leftmargin=15pt,labelindent=0pt}
+
+\CatchFileDef{\HEAD}{../../.git/refs/heads/master}{}
+\newcommand{\gitrevision}{\StrLeft{\HEAD}{7}}
+\newcommand{\gh}{
+  https://github.com/pompydev/cheatsheets/tree/\HEAD
+}
+
+\newcommand{\cc}[1]{
+  $\vcenter{\hbox{#1}}$
+}
+
+\begin{document}
+
+\pagenumbering{gobble}
+
+\centerline{\large pomp's}
+\null
+\centerline{\LARGE \textbf{Physics}}
+\null
+\centerline{\large Cheat Sheet}
+
+\vspace{236.5pt}
+
+\columnratio{0.63}
+\begin{paracol}{2}
+  \vspace{21pt}
+  \href{\gh}{\cc{\large\faGithub} pompydev/cheatsheets}
+
+  git reversion:\gitrevision
+
+  made with \LaTeX
+  \switchcolumn
+  \fbox{\qrcode[hyperlink,height=20mm]{\gh}}
+\end{paracol}
+\newpage
+
+\tableofcontents
+\newpage
+
+\pagenumbering{arabic}
+\chapter{Classical Mechanics}
+\section{Thermodynamics}
+
+\end{document}