Would please tell if is possible to use public transport from San Francisco to Saratoga?
Sounds like a great trip. While you are in Sunnyvale I think you would enjoy the Red Branch Cider & Brewing CompanyRed Branch Cider company (redbranchcider.com). It is a small local ciderey with delicious hard ciders. They have a tasting bar with a sampler. Blackberry and peach are my favorites.
Once you are in San Francisco you have muni, which will take you everywhere. You can visit Muir Woods National Monument, Sausalito, Golden Gate Bridge, Chinatown San Francisco, North Beach (California), Golden Gate Parkand all the highlights. I recommend you visit Lands End Trail, Sutro Bathsand walk the trail to the California Palace of the Legion of Honor. Beautiful views.
The Ferry Building Marketplacehas an extensive Farmer’s market Tuesday, Thursday and Sat. From the Ferry Terminal; Tiburon & Vallejo Baylink you can take a municipal ferry to various locations around the bay.
I am sure you will have a great time exploring SF and traveling down to LA.
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Technically, yes you can but it would involve taking multiple forms of public transportation and take about 2 1/2 hours for what should be a drive of only 45 minutes. To simplify your trip, I would take the BART train as far south as you can (Daly city) get off and call Uber to drive the rest of the way. Or you can use the online service
Possible slightly painful, use google mass transit directions, works wonders in the bay especially
likely: caltrain > bus