--- a/day2/session4.tex	Tue Jun 29 01:40:24 2010 -0500
+++ b/day2/session4.tex	Tue Jun 29 01:59:20 2010 -0500
@@ -454,6 +454,11 @@
 \inctime{15} 
 \end{frame}
 
+\begin{frame}
+\frametitle{The Python Debugger}
+\url{http://docs.python.org/library/pdb.html}
+\end{frame}
+
 \subsection{Exercise}
 \begin{frame}[fragile]
 \frametitle{Debugging: Exercise}
@@ -479,6 +484,39 @@
 \end{frame}
 
 \begin{frame}
+ \frametitle{Documentation}
+  \begin{itemize}
+    \item Python: \linebreak
+      \url{http://docs.python.org/}
+    \item Scipy \& Numpy: \linebreak
+      \url{http://docs.scipy.org/doc/}
+    \item IPython: \linebreak
+      \url{http://ipython.scipy.org/moin/Documentation}
+     \item Matplotlib: \linebreak
+      \url{http://matplotlib.sourceforge.net/}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Packages}
+ Home for packages
+  \begin{itemize}
+   \item Python Package Index: \linebreak
+    \url{http://pypi.python.org/pypi}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Mailing lists}
+   \begin{itemize}
+   \item numpy-discussion \& Scipy-User: \linebreak
+    \url{http://scipy.org/Mailing_Lists}
+   \item matplotlib-users: \linebreak
+     \url{http://sourceforge.net/mail/?group_id=80706}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
   \frametitle{Summary}
 We have covered:
   \begin{itemize}