How do 你 add stuff to your favorites?

First of all, this 问题 should be on the 潮流粉丝俱乐部 spot.

But to answer your question, every time 你 see a photo, article, video, forum, 或者 link, 你 see under the ratings, there's a button called "save" (it's the green button) Click on it, and it will be in your 收藏夹 list.