http://thiagomarzagao.com/2013/11/17/webscraping-with-seleni...
videoblog
https://github.com/kjam/python-web-scraping-tutorial/blob/ma...
The first link is a straight following link, and the second one is a 30mimn video that goes through all available Python crawlers.
My recommendation: follow the first one if you are sure to use selenium or watch the second link to check all possibilities.