I am just the biggest fan of Scott Meyer’s blog, Go Into the Story (GITS). It’s on my links page on the bottom right.
He not only posts info on how to write, but my favorite, info about the biz (invaluable to a writer not living in LA).
After following his blog for the last year, I feel I could carry an intelligent conversation about the screenwriting biz, the deals, the players, etc., based solely on the Hollywood filter that is Scott.
If you are serious about breaking into LaLa land, like me, this is one blog you cannot live without.