I think the OP was asking a sincere question.
Posting Obamas website to get data on him is like sending someone to the New York Times to get unbiased news.
I think the website is a good base. Then it's rather easy to start to research and compare. The internet allows someone to do a ton of research in a short amount of time. Maybe I should be more specific about the methods I use.
1. Each candidate's site, as well as other political sites such as ontheissues.org
2. Major periodicals-Time, Newsweek, USNews and World Report
3. Newspapers, local, as well as national like USA Today. Read for content in other areas of the US. Look for newspapers from, say, Illinois, California, Mass.
4. For daily updates...go to google. hit the news button in the upper left hand corner. Use the search on the news page to look for current stories on whatever issue you're interested in learning more about. Sort through the stories. Pay attention to who wrote the article. Look for independent thought.
5. Use the network news sites. ABC, MSNBC, CBS, FOX....Read carefully for content, you'll see bias sometimes, sometimes not. Bias, though, also tells you something.
So much is online!! No more having to make a trip to the library to hopefully find something you want to read. And even better, the information is current!!!