For the more world-wide stuff, and current events that impact politics, CNN can be a good source of information. Just make sure that you don't take any of the user comments seriously, most are just uninformed trolls.
Are you looking for the basic tenets of politics, or more applicable contemporary politics? For the former, there are tons of political guides out there which political science college students use. Get political dictionaries too. Also, try to a read up on basic economics too since they play a central role to politics today. Sloman is a good author of economics