Okay I had to write a 1-2 page on this philosopher but my teacher said you had to make a posterboard with it (making a bibliography on the poster of that person) .. what exactly is a bibliography? if anyone could help me, that'd be a blessing. thanks.

A bibliography is like a citation of where you got your information.

Here's a site that could help you with writing it:
http://www.bialik.netaxis.qc.ca/homework/stylesheet2.htm

Yeah, basically what Elaine said. Try to jot down your sources (where you get your information); that's what you put in a bibliography. Then you can either create your bibliography by hand, or use one of those citation generators.

don't use a citation generator
they won't work and you will fail

just ask a teacher how too write one
they're not that hard

How can you not know what a bibliography is.. How do you do your research papers?

^yeah and I'm assuming he's in high school (since he was writing about it in his other topic, dear member). But oh well some students have horrible teachers or some just don't pay attention.

I forgot the website url but I know there's one that tells you the order of how to write a bibliography of a website, book, article, etc. I think it's called MLA citation factsheet..or along those lines.

Don't just write a bibliography in random order. Honestly, I CANNOT memorize how the order goes (with the exception of the author being first since that is always obvious) so I use my notes >.<