Here's a selection of some of the blogs that I read which are written by pilots (or former flyers). There's some great information for any flying enthusiast or aspiring pilot here. In no particular order (because I love them all!)...
From the Flight Deck- Captain Doug
Cockpit Conversation - Aviatrix
Jet Head's Blog - Chris
Flight to Success - Karlene
Blogging at FL250 - Sam
Former Curmudgeon - Fin