\documentclass{book}

\input{config/config.tex}

\begin{document}

\pagestyle{empty}
% TODO: Change the title, subtitle, and author
\frontpage{Title}{Subtitle}{Author}

\input{config/frontmatter.tex}

% Start main content -----------------------------------------------------------
\part{Part 1}

\input{chapters/chapter1.tex}

% End main content -------------------------------------------------------------

\input{config/backmatter.tex}

\end{document}