This guys has a lot of nice material, presented in a clear and approachable way (this week I was teaching Python and I was linking him a lot).<p>For example:<p><a href="http://pbpython.com/visualization-tools-1.html" rel="nofollow">http://pbpython.com/visualization-tools-1.html</a><p><a href="http://pbpython.com/web-scraping-mn-budget.html" rel="nofollow">http://pbpython.com/web-scraping-mn-budget.html</a>