how to use a proxy server to bypass an internet filter?

How do you setup and use proxy server software that is free and where do you find servers to use and how do you use the servers. So that you can access facebook, twitter, and other sites that a filter would normally block.  Thanks! :D

one that was common at our school was, all you do is type the url into the bar and it takes you to the site.
ARJOON6 years ago lets u encrypts and customize the page and much more. try different proxies if it don't work. this site has over 10000proxy servers
lemonie6 years ago

Why not ask other kids at your school - the ones who are already doing it?