If you are new to Python, the Web2py book includes a brief but good summary. It's quite possible that's enough to get started developing with Web2py. http://web2py.com/books/default/chapter/29/2
Then, go through the "Overview" which is a pretty approachable introduction that covers most of what you need to build a web app: http://web2py.com/books/default/chapter/29/3 Using Web2py and Bottle together doesn't make much sense as Web2py performs a superset of Bottle.
