it's funny. bloomberg terminals are so expensive and in some ways not that much proprietary data/info...... but they 1) consolidate so much info, 2) super-charged contacts/email/text system.
I would argue you should read everything you can. Even completely biased sites can give you a perspective that when assessed in conjunction with other information can provide insights that you might not otherwise arrive at. For example, if you read cnn, then Republicans are idiots, but if you read fox news, then the Democrats are the idiots, but read both and realize they are both cherry picking to make the other look bad. When they agree, you know something is probably true. Probably most important is thinking about what you've read and being able to analyze it critically. I'll let you know if I can ever figure that one out...
Whale Wisdom website worth checking out. It lists the latest 13F filings for major hedge funds. Here is a link their "heat map" an aggregation of hedge fund holdings.