Aww I love guinea pigs. We had 2 but unfortunately 1 died and then when we moved we had to give the other one away

I still miss him and it was over a year ago that he was adopted (and had his name changed *cries*).
Guinea pigs are lovely pets. They are really noisy though! Ours learned that when the fridge door opened (we had an open plan living room/kitchen) they were usually fed lots of lettuce, so even when it wasn't feeding time, if the fridge was opened they would be squeaking and running around mad in their cage lol. They always came out of their wee house to greet us when we got home from work, awwwww it was so cute
Our pigs were really shy out of the cage though, they peed all over us at first when we started handling them. I taught them to come out of their cage on their own so that I didn't have to chase them around the cage to get them out

bwahaha!
Sorry this post isn't really helpful is it lol. Just get them! They are amazing pets, you won't be disappointed