Where can I find information about Greek Skepticism?

[Le poisson ecrit]

We're doing a paper on Greek philosophy. We hadn't studied skepticism, but I looked it up and it really spoke to me, so my teacher said I could write a paper on it. I'd like to learn more about it--can people who know about it please provide me with some websites that are in-depth but not convoluted?

Thanks. It'll be a big help.