If you are new to their products, one quick way to learn your way around (since so much of the app is exposed to the keyboard) is to just work through the keyboard shortcuts trying them out.  I don't see the doc for PyCharm yet, but most are the same as Intellij - <a href="http://www.jetbrains.com/idea/documentation/documentation.html" rel="nofollow">http://www.jetbrains.com/idea/documentation/documentation.ht...</a><p>Good ones include:
Command-w: smart expanding select
Shift-command-N: Navigate to file.  Note you can use wildcards in this box
Command-p: param info