Dan Larson and I have been hanging out at the AP US Government reading for years and I am looking forward to doing the same with Andrew Conneen at the AP Comparative exam this year. At any rate they just put out their 114th Congress preview and it is great. You can see all of their videos here and their site here. What I like about Andrew and Dan is that they have dropped their textbook for AP Gov't and are working to do the same in AP Comparative. You can see how they do it on their site. Also you can follow Andrew on Twitter.
Wikipedia and the National Journal have some nice graphics on the 114th.