diff --git a/ep1.tex b/ep1.tex
index 496570e..067a6c3 100644
--- a/ep1.tex
+++ b/ep1.tex
@@ -21,13 +21,109 @@
 
 \date{\today}
 \title{Mathematics of Programming Languages}
-\setep{01}{Introduction}
+\setep{01}{First step to design a language}
 
 
 \begin{document}
 \maketitle
-\section{
-  blah
-}
-hnt
+\begin{frame}{So far\ldots}{}
+  \begin{itemize}
+  \item In the first season we created a super simple compiler
+  \item We learned about the basics of LLVM and MLIR
+  \item We created a basic platform to develope a programming language, that includes:
+    \begin{itemize}
+    \item A parser
+    \item A JIT engine
+    \item A code generation pipeline
+    \item and few other bits and pieces
+    \end{itemize}
+  \item BUT we didn't come up with a specification for Serene
+  \item We didn't design the language yet
+  \item That's what we're going to do in this series
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Specification}{}
+  \begin{itemize}
+  \item Not all the programming langs have specification
+  \item A spec or standard brings clarity for users and developers
+  \item We could've just implement an already exist spec lik \href{http://www.r6rs.org/}{R6RS} (Scheme)
+  \item Or just create a language based on our intuition (many languages have done this)
+  \item Or desing a standard from scratch \\
+    We can use about 100 years of Mathematics and Computer Science to our benefit
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Where to look?}
+  \begin{itemize}
+  \item Based on the past experience we have some initial idea on where to look
+  \item Later on we will find out whether or not our initial ideas were good
+  \item For example
+    \begin{itemize}
+    \item I prefer functional programming
+    \item Dynamic type systems
+    \item \ldots
+    \end{itemize}
+  \item We can start from there and study what we think is true and also any alternative to them
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Where we want to look}
+  \begin{itemize}
+  \item There are few major theories we can start from:
+    \begin{itemize}
+    \item Type theory
+    \item Category theory
+    \item Proof theory
+    \end{itemize}
+  \item They all describe the same world from different perspectives
+  \item Also, there are few papers that we need to look at, like the lisp paper
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Required tools}
+  \begin{itemize}
+  \item We need build up few mathematical skills
+  \item E.g We need to learn:
+    \begin{itemize}
+    \item Logic
+    \item Set theory
+    \item and discrete mathematics in general
+    \end{itemize}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{The Plan}{}
+  \begin{itemize}
+  \item I like this series to be self contained as much as possible
+  \item We're going to start from basics
+  \item We will cover
+    \begin{itemize}
+    \item What is mathematics? and why do we need it?
+    \item Mathematical thinking
+    \item Discrete mathematics
+    \item $\lambda$-calculus
+    \item Type theory
+    \item and the rest
+    \end{itemize}
+  \item We will study the history of computer science an mathematics as well
+  \item History is a great guide
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Disclaimer}{}
+  \begin{itemize}
+  \item I'm not a professional mathematition
+  \item I'm just sharing the result of my research and things that I learn. Take it with a grain of salt
+  \item ``Nullius in verba''
+  \end{itemize}
+\end{frame}
+
+\begin{frame}{Contact}{}
+  Please shared your thoughts and ideas or researchs and papers that you want me to have a look at via:
+  \begin{itemize}
+  \item Comment section on \href{https://youtube.com/c/lxsameer}{youtube}
+  \item \href{https://lxsameer.com}{https://lxsameer.com}
+  \end{itemize}
+\end{frame}
 \end{document}
diff --git a/lxpresent.cls b/lxpresent.cls
index 7bdb809..4f77f6e 100644
--- a/lxpresent.cls
+++ b/lxpresent.cls
@@ -17,7 +17,7 @@
 % along with this program; if not, write to the Free Software
 % Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-\LoadClass[hyperref={pdfpagelabels=false,hidelinks},presentation]{beamer}
+\LoadClass[hyperref={pdfpagelabels=false,hidelinks},aspectratio=169,presentation]{beamer}
 
 \ProvidesClass{lxpresent}[2022/09/22 lxsameer's presentation class]
 \RequirePackage[default,light,semibold]{sourcesanspro}
@@ -36,16 +36,30 @@
 
 \definecolor{spurple}{HTML}{5e246e}
 \definecolor{spurple1}{HTML}{eeddaa}
-\definecolor{linkcolor}{HTML}{eeeeec}
+\definecolor{linkcolor}{HTML}{F75E9B}
+
+\hypersetup{colorlinks=true,allcolors=linkcolor}
 
 \setbeamercolor{palette primary}{fg=spurple,bg=white}
-\setbeamercolor{palette secondary}{fg=spurple,bg=white}
+\setbeamercolor{palette secondary} {fg=spurple,bg=white}
 \setbeamercolor{structure}{fg=white,bg=spurple}
 \setbeamercolor{title in head/foot}{fg=white,bg=spurple}
 \setbeamercolor{date in head/foot}{fg=lightgray,bg=spurple}
 \setbeamercolor{background canvas}{bg=spurple}
+\setbeamercolor{title}{fg=blue,bg=spurple}
+\setbeamercolor{normal text}{fg=white}
+\setbeamercolor{itemize item}{fg=red,bg=spurple}
+\setbeamercolor*{item}{fg=red}
+\setbeamercolor{title in head/foot}{fg=white,bg=spurple}
 
-
+\setbeamertemplate{headline}{%
+  \leavevmode%
+  \hbox{
+  \begin{tikzpicture}
+    \node[overlay,anchor=south west,inner sep=0,scale=0.4,opacity=0.3] at (10.6cm,-10.15cm) {\includegraphics[width=\textwidth]{serene.png}};
+  \end{tikzpicture}
+  }
+}
 % definition of the footline template
 \defbeamertemplate*{footline}{mytheme}{%
   \leavevmode%
@@ -64,12 +78,12 @@
 
   \begin{tikzpicture}
 
-    \node[overlay,anchor=south west,inner sep=0,scale=0.7,opacity=1] at (6cm,-7cm) {\includegraphics[width=\textwidth]{serene.png}};
+    \node[overlay,anchor=south west,inner sep=0,scale=0.6,opacity=1] at (8cm,-7cm) {\includegraphics[width=\textwidth]{serene.png}};
 
   \end{tikzpicture}
 
   \begin{tikzpicture}[remember picture,overlay]
-    \node[text=white,anchor=south west,font=\sffamily\huge,text width=0.8\paperwidth]
+    \node[text=white,anchor=south west,font=\sffamily\huge,text width=0.6\paperwidth]
     at ([xshift=20pt,yshift=30pt]current page.west)
     (title)
     {Mathematics of Programming Languages};
@@ -81,7 +95,7 @@
     \node[text=white,font=\large\sffamily,anchor=south west]
     at ([yshift=-15pt]epnum.south west)
     (eptitle)
-    {\textbf{\@eptitle}};
+    {\hspace{0.2cm}\textbf{\@eptitle}};
   \end{tikzpicture}%
 }
 
@@ -90,13 +104,8 @@
 
 % definition of the symbols used in itemize
 \newcommand\mysymbol{%
-  \begin{tikzpicture}[xscale=0.85]
-  \fill[spurple]
-  (-1ex,1ex) to[out=-60,in=240,looseness=1.2]
-  (1ex,1ex) to[out=240,in=120,looseness=1.2]
-  (1ex,-1ex) to[out=120,in=60,looseness=1.2]
-  (-1ex,-1ex) to[out=60,in=-60,looseness=1.2]
-  cycle;
+  \begin{tikzpicture}[scale=0.1]
+    \node[circle,minimum size=2mm,inner sep=0pt, text=white,fill=white] (a) at (0,0){};
   \end{tikzpicture}%
   }