Visiting San Francisco from England

Hey all. I'm working down in Silicon Valley for few days at the end of January til February 8th. From then, I've booked accommodation in SF for some exploration until the 12th. I'm visiting from the UK.Any tips on where to go and what to see? If there's anyone that would like to show me around I'll sure buy you a pint or a coffee!Alcatraz is on my list, as is the bridge, but I'm keen to see some more locally recommended things.Staying near Fisherman's Warf for the first 3 nights then I have booked and air bnb in the Castro.Any help gratefully received!Happy new year