The Bogleheads: Inspired by Jack Bogle, inventor of the index fund, Bogleheads emphasize living below one's means and passive index investing. Lots of basic how-to and a huge forum.

The Oblivious Investor: "simple, low-maintenance investing" by a CPA.  Useful calculators and excellent information.

Fox Wealth Management  Great blog by a CPA/CFP who caters to physicians.  

Able to Pay  A financial planning firm run by a Boglehead with excellent articles on portfolio construction, rebalancing and goals, along with useful calculators.

Mr Money Moustache:  hard-core frugality, a favorite with the Financial Independence crowd.

The Finance Buff:  lots of nitty-gritty info