For those who wish to see launches, there are two scheduled in Vandenberg in September, a noon launch of a Delta on the 15th, and a 9 PM launch of a Falcon 9 on the 19th. And some time to be around Santa Barbara between, if that works out. These are all "NET" dates, which means "not earlier than" and they are prone to reschedule and scrub.
For ULA launches at Vandenberg, use the public viewing area at
34º 46.331’ N, 120º 31.901’ W, park on Corral Road and walk to the bleachers. The guy in air force ACUs is friendly, public is invited.
For Falcon 9, go
here. The road will be blocked immediately after that point.
For Canaveral launches, park at the
side of the A1A causeway to Port Canaveral, or the
401 going to the gate of the base at Port Canaveral.
You can follow the schedules of all major rockets
here. When you are close to a launch time, subscribe to
@spaceflightnow on twitter, and then hook that to your phone SMS via
these instructions. That will give you real-time information when the launch happens, or if there's a scrub.