To \textbf{subscribe} to the course e-textbook:
\vspace{-0.07in}
\begin{enumerate}
 \setlength{\itemsep}{-3pt}
   \item  Sign in or create an account at learn.zybooks.com
  \item  Enter the zyBook code: \textbf{VILLANOVAECE2620KulkarniFall2022}
  \item  Subscribe
\end{enumerate}