how do you find your friends on this? because i can't find one of my friend on this and i looked all over! please help me!!!

What do you mean? Like search her first and last name to find her, as is customary on facebook? If so, that can't be done.
However, if you know her username, www.fanpop.com/fans/______.

2 ways

link here)

OR

Search bar(type name)-advanced search-fans-search-you find friend