Experience: If you want to find some document, software

Beside using Google, if you want to find software, you can go to sourceforge.net to find, even you don't intent to develop it, just download/compile and use

And for document, you can go to some document hosting site like: slideshare.net, youtube (video hosting), scribd.com (document hosting) to find your needed documents

With me, ACM, IEEE for standard