How do te become a dedicated o die hard fan of something?

te have to do it because to be the best however te spell it, it is apart of fanpop i think ;)

te have to be really very active

For your part, all te can do is contribute a lot of things which can be fanned: images, videos, links and articles. Other people then fan those contributions. If te get enough fan of what you've added, te become a dedicated in that club, if te get più again te become a die hard and so on. It helps to contribute to active clubs, because in those others are più likely to see what you've done and fan it.