You can take surface piercing almost anywhere you want, but it's recommended to take it somewhere where the skin is not under lot of stress or stretch.
You should treat surface piercing like any other piercing and shower it twice a day to get all intersitital fluids and other impurity out. Do not use any antiseptic liquids, they dry the skin and may cause the piercing to grow out. Do not go swimming, especially in swimming halls, for 3-4 months. For the first week you should avoid heavy exercise as well.
The longer the surface jewelry is the longer it takes to heal. Healing takes usually 4-12 months, so be patient and give the piercing enough time to heal properly. If the jewelry gets caught on something and tears a bit, it may cause the healing time to become longer.
Don't take the surface jewelry out unless you want to get it out for good. Getting the jewelry back in is really difficult even with healed piercing, not to mention unhealed piercing. If you need to get off the jewelry for momentarily (for example during the doctors appointment), turn to your piercing artist.