please check VTA web site http://www.vta.org/schedules/schedules_bymap.html. You can find all theVTA route schedules and maps.
San Francisco is a very beautiful city. As for where to go it depends on your personal taste. Some tourist sopts I know are Lambard street, Fishman's Wharf, Palace of Fine Art, Golden gate Bridge and maybe Crissy Field; however, if you want to get to know the culture of San francisco, then it's a different story.