this is what you do, being a giants fan also.
you can try to get your tickets online at
www.tickets.com. type in san francisco giants. you get to the same site if you go to the giants website and click on their schedule and then click on the buy on tickets link.
if they don't have tickets available for the game you want, you can try to get day of game tickets. what you do is three hours before game time 500 pre numbered wristbands will be given out to those 14 and older. if you have a lot of friends, spread yourself out through the line. you only need one wristband to buy four tickets (i think, this might have changed) they will draw a number and from there they will sell tickets. so if they draw 352, all numbers from 352 to 500 will get first crack at tickets, and then they start over at 1. best thing is to get there early and spread yourself through the line. they guarantee five hundred tickets before the game. these are bleachers seats and only 7 bucks. they may have some other seats available and you can purchase those also. this is the way i got into the ballpark last summer.
you can also go to the SF giants website, click on fan forum, and look for a thread title "tickets for sale/june" or whatever months are up. they have people selling tickets.
on the sf giants website you can also go to the "double play window" that's where season ticket holders who are not going to certain games can sell their tickets to someone else for face value.
there's also always ebay.
have fun at the game. go giants.
oh and i suggest NOT driving if you can avoid it. parking is 15 bucks.
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