Will it hurt?
Yes. No. Maybe so. There is no good answer to this question besides YMMV (your mileage may vary). It is dependent on any number of factors, including but not limited to: your personal pain tolerance, the skill of the bodyart professional (tattoo artist or piercer), the quality of the needles, the body part in question. Most mods hurt at least a little, some hurt alot. The definition of "little" and "lot" is solely up to you, and you are going to have to decide for yourself.

How much will (insert mod here) cost?
Please call your local shop for an estimate. The answer depends on the shop, the artist/piercer, your local economy, the size of the tattoo or the type of jewelry, and the price of tea in china.

Where can I get pierced/tattooed that won't card me?
While you might be able to find such places, consider this: is a shop that is willing to break the rules regarding working on minors going to be reliable on other, more critical issues like cleanliness and sterilization? The "professionals" willing to work on you without carding you or asking for parental permission are probably hacks and scratchers, and you're much better off waiting until you're legal or getting permission.

Is betadine/ bactine/ peroxide okay for aftercare?
While betadine, bactine, and other similar products were once recommended for use on fresh piercings, they are no longer. Peroxide was never a good idea, since it kills healing cells; don't use it.

I just got my pierced and now it is red/swollen/pus-filled/etc. What do I do?
See your piercer. And next time, follow his or her aftercare instructions (unless your piercer is Todd Bertrang...)

Will my piercing jewelry set off metal detectors?
For the most part, this will not happen. There are isolated incidents where someone or other has set off a detector that is set to be particularly sensitive, but the majority of the time pierced individuals sail through metal detectors with nary a problem.

Can I still breast feed after getting my nipples pierced?
Yes.

Where can I find kanji?
http://www.kanjitattoos.com/

What about tattoos that fade in five years?
There is no such thing. It doesn't exist. It's a lie. It is physically/biologically impossible.