Make sure you don't smoke or drink alcohol after you get pierced. After I got mine done, I had issues eating certain foods. For instance, strawberries were a pain, the little seeds always got caught down in the "hole". Make sure you brush your teeth and rinse with mouth wash, at least 1-2 times a day. Pretty much all I've got for you. It's not as painful as you may think. Good luck.
First, you must be over 18 years of age to get a tongue piercing. If not, you will have to be accompanied by an adult who can give consent. Tongue piercings tend to take longer to heal, so it is imperative that you follow instructions regarding cleaning. More tips are available on www.pacificbodyjewellery.com/aftercare/tongue_piercing_care.htm.
your gunna talk a little funny cuz of the swelling. Smoking or drinking dont do nothing bad to it, idk why ppl say that. i did it and it was fine. just DONT BITE YOUR TOUNGE !!! or accidentaly bite your peircing cuz you'll yank it and it kinda hurts.