I moved to SF from Michigan for my startup a few years back, best decision ever. Lots of events, lots of talent and very accessible vc's. Its all quite natural. Just get into the mix. there is literally events all day everyday somewhere in the San Francisco Bay area. Use some of the free ticket services to find good Events. Join an incubator like plug and play tech center. Network! make sure to do the Palo Alto scene as well as the San Francisco scene, very different.