I personally do not reccomend InuYasha if you haven't started it already. Especially if you're going to buy the stuff. It's too long, not really that good, and by time the anime ends the story still isn't quite finished.

One opinion I've seen is that it's "Dragon Ball Z for Girls". Which is not entirely inaccurate (While DBZ is legendary, InuYasha is not.) Just so that it doesnt' seem like I'm unneccesarily harping on InuYasha, I'll say that it's not a terrible show. I have seen worse. It has several good points. I just think that one should go for higher quality/more worthwhile stuff before the not-so-high quality.

Due to your age, I would reccomend something a little more mature: Escaflowne. It's close enough to InuYasha in that it's an action-ish show with love and stuff, except it's much shorter and is actually something you need to watch as an anime fan. And the music is awesome.