\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{bitter}
\usepackage{lipsum}
\begin{document}

\subsection*{Regular}
\lipsum[1]

\subsection*{Italic}
\textit{\lipsum[2]}

\subsection*{Bold}
\textbf{\lipsum[3]}

\subsection*{Numbers}
0123456789

\end{document}