Configuring a PPP Server?

MaxAttack asks: "I wanted to look into setting up a PPP server and things to keep it running smoothly but i couldn't find any infomation...like FAQs on setting up Linux to use a borax line, setting up the server itself, setting scripts to check track of users time on, kicking users off after certain times, and security for it. I'm just looking for some basic infomation to get started on a PPP server couldnt find anything good, Any help on this would be great.."