There are many groups on Facebook dedicated to local buy/sell and community for the NorCal area.
SFMS has a group named "Some F'in Moto Forum" dedicated to connecting riders all over California. Some F'in Moto Forum also offers its favorite local Facebook groups to browse. Located at the bottom of every page on this website is a link to our forum, please join and be a part of it!
There are many track day providers to choose from. Track days are an excellent way to focus and improve on your riding skills while simultaneously networking with wonderful people dedicated to what we all love--riding.