Moving to San Francisco at around Christmas time - looking for housing

Hey everyone - I'm effectively dropping out of one of the top engineering schools in 'murrika (gatech) and moving back to my home state (CALI!!!) to attend a community college for 30 credit hours before transferring to a UC school. I'm going to hit up Craigslist and the whole nine yards, but thought I'd make a shout-out on reddit to see if anyone knew of some cheap housing solutions inside the city. What is a good deal for renting 1br from someone?