\documentclass{scrbook}
\usepackage{myformat}
\setmainfont{OpenDyslexic}[
  Path = fonts/OpenDyslexic/,
  Extension = .otf,
  UprightFont = *-Regular,
  BoldFont = *-Bold,
  ItalicFont = *-Italic,
  BoldItalicFont = *-BoldItalic
]
\title{LearnLaTeX}
\author{Domipoke}
% 5
\begin{document}
\include{./book.tex}
\end{document}