I grew up there.
The new Cal High is the perfect spot to train, lots to do.
You should try looking on San Francisco Parkour
. You'll find lots of East Bay people there and we offer free Beginner's classes once a month.
Additionally, when posting on the internets, you should avoid using all capital letters. USING ALL CAPITALS MEANS YOU ARE SHOUTING. Which is rude.
Good luck, hopefully I'll see you at an SFPK jam!