Good, trustworthy personal-finance websites can be hard to find. These are gleaned from a curated list of most-popular "PF" sites at ebizmba.com. See the full list at http://bit.ly/N5HZNF.
Seeking Alpha. If you want to invest in stocks that will grow, or "short" a stock (in effect betting the stock will fall, not rise), but don't know where to begin, you can get ideas and join in discussions at Seeking Alpha. The plain-English analysis is geared for a wide range of users. You can join the website to set up a portfolio that aggregates news about the shares and companies you are interested in and to get e-mail alerts. The home screen has handy categories, such as "market currents" to show what's coming up on the day's economic calendar and trends to watch for.