Try to get something that reflects your personality or something of sentimental value. I have a guitar on my back and I love it because it was may first Gibson Les Paul guitar. I plan on getting some tribal art next and to finish my hand piece. :)
If you want one...don't rush. Everyone who is in to them will tell you to wait. Think of what you want and sit on the idea. If your mind does not change after a year or more, then you know you picked the right thing. It will be on your body a long time. I know people covered with them that have their own rules on how many years they wait before adding a new one. And the reason is exactly what I mentioned...making sure they want that on their body forever.
Just don't get anything translated into a Japanese/Chinese character that only says "water" or "luck". Imagine having that English word embedded to your skin? How silly that'd be? "Teddy Bear" tattooed on your forehead. YES, go with that one. a Teddy bear on your head!
DONT GET ANYONES NAME!!!its like a death wish for that relationship not literally death but you might end up going you separate ways or not talking,if you get a name do it for someone you lost or like my mom did and got my name on her (kids are different btw)out a respect but NEVER get like a boyfriend or a girl friends name just dont .