\begin{frame}{Closing remarks}
    The best book for further learning is \textbf{LaTeX Beginner's Guide} by \textbf{Stefan Kottwitz}. 
    The first edition is available as an eBook at the UU library.
    \begin{figure}
        \centering
    \includegraphics[width=0.8\textwidth]{images/kottwitz_book.pdf}
\end{figure}
\end{frame}