I can probably help a little here.
First, if your camera allows you to set the aperture, great! Choosing a wide aperture(lower number) will give you a shallower depth of field, which usually makes things and people look better because it isolates them from the background. If your camera doesn't allow you to control the aperture, choose the portrait mode, and the camera should do that automatically.
Second: Focus. When you shoot with a wide aperture, less is in focus, so make damn sure that the pint of beer
is in focus
Third: Lighting. I find that beer looks best when there is even light through the beer to empathize the color, but not too much light so that the rest of the photo is under exposed. Also, direct sunlight tends to wash out the photo.
Fourth: If you can keep the beer out of the dead-center of the photo, it's usually for the best. Photos almost always tend to more interesting when the subject isn't dead center.
Fifth, you can get good photos indoors, but you need to turn on all your lights, and definitely don't use the flash
That's about it really, I'll give some of my photos.
First is an example of what not to do. The glass is in direct sunlight, and it doesn't look as good as it could.
Second is a better example shot from the same place. Notice without the direct sunlight the glass and head aren't washed out (different beer obviously.)
Third is a shot indoors. This was shot with a very wide aperture. Notice how the bottle just inches behind the glass is blurred out of focus
Fourth is another one indoors, again very wide aperture.
My last piece of advice. Never, ever use a flash. You're almost always better of without the flash on most point and shoot cameras. They're only useful if you flat out can't take a picture without it.