Save the Cat but focused specifically on writing comedies. Really focuses on making sure you derive maximum conflict from your protagonist meeting your premise.
A decades long professional writer and showrunner tells you how to write a sitcom. You're dumb if you wanna write sitcoms and haven't cracked this open yet.
WRITING THE PILOT is a place to start.
From previous comments:
TV Calling has a lot of info.
Spec Writing Rules
The Podcast
Jane Espensons Blog is also invaluable
From a thread two weeks ago
by Billy Mernit
by Keith Giglio
by Sheldon Bull
by Scott Dikkers
by William Rabkin
by Jack Epps Jr
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Also, this subreddit has a Wiki.
Coincidentally, just saw this:
http://kenlevine.blogspot.de/2015/01/what-i-look-for-in-spec-pilot.html
This can be found online, if you look around
http://www.amazon.com/Writing-Pilot-William-Rabkin-ebook/dp/B004UWPQOE