Ok, being a beerlover, I have to say any "yellow" beers are good starters. Beer, like wine and other spirits are an aquired taste. You might not like the stronger seers at first. Budweiser is my favorite, they use rice instead of corn for a lighter crisp taste, and the beechwood(same wood as in popsicle sticks and toothpics) is used in fermenting not because of its flavor, but due to it's lack thereof. This leaves only the airy grain flavors with not much aftertaste. Otherwise, coors light or other american style lagers are good. These are meant to be enjoyed as cold as possible. If you buy it for home, put a mug AND the beer in the frezer about 1/2 hour before you are going to enjoy them. If you live near a brewery, you can get a free tour of many of them and a free sample. Freshness has a big impact on taste. On a budweiser tour they give a fresh sample, and one that has been in a hot room with 24 hour lighting for 30 days and the difference is astronomical.
If you decide you like beer, you could move to the more interesting flavors. Remember that beer is mostly grain. Fat Tire tastes kind of like rye bread and a lot of folks like it. Your darker beers like sierra nevade pale ale, have a certain spice to them. Pilsners, hefeweizens and the like are lighter in color but not necisarily in flavor. They can range from fruity to thick in grain. Some stores carry "tour of(insert country)" beers that feature one each of a variety of beers. Other stores offer a build your own six pack where you can taste your choice. Some random selections you may like are pyramid apricot, strawberry blonde, blue moon, sam adams light(the first light beer to win a ribon in a non light beer cattegory, it is wonderful) and newcastle.
If you are going to go have more than one, please have a sober driver or hire a cab. I know too many people who have had thier lives ruined by drunk driving. That ranges from lossing a licence, losing a car, to losing a life.