No problem. Couple things I forgot real quick
1) If you use your debit/credit card it will want to charge 20.00 its just set up for that. Just look up to the right and there is a fare list TO where you want to go. Just find SFO and whatever the fare is just +/- using dollar and nickel to get to the desired fare. Hit Print ticket and boom you are all set.

2) when you transfer on the sfo side all you have to do is step off the train and right above you will be a monitor telling the time for the next sfo train. Same track just different train.