I've owned 4 generation of guinea pigs and I've learned through the years of what to do/not do with them. When you first bring it home, make sure you leave them alone in their new home for a few days (Though you should still fill their food/water). They need to get used to their new environment. After those initial days, you gradually let your presence known. Start by offering some romaine or red/green leaf lettuce (whatever you do, do NOT give them iceberg lettuce....this stuff, when fed frequently, will back up their digestive system). You can then gradually start petting them. After a while, they will let you pick them up and make sure you support their bottoms so they don't asphyxiate. After a while, their hearing will adjust to their new home and they will even squeal when they hear your footsteps wanting attention if you take good care of them.
Another note, they are very social animals so it's best to have 2 guinea pigs (same gender or fixed). They actually WILL get lonely if you don't have 2 and I've heard stories of guinea pigs dying due to loneliness. Also I hope you have a large enough home for the guinea pig(s). Listed below are good sources for guinea pig care/home sizes that I usually refer to. Hope you enjoy your new pet.
Guinea Pig Carehttp://www.cavyspirit.com/care.htmGuinea Pig Homeshttp://www.guineapigcages.com/And here's a picture of my guinea pig. ^.^
