[Haskell-beginners] Best way to have a fresh&updated Haskell installation

Hi guys, like subject says , how can I get it? I'm using Debian Linux, and I need a guide to have a updated haskell platform, easy to update when will necessary. Haskell Platform is totally out of date, I know is required compile all, but I need a guide in order to get a standard way. Thanks in advance. Christian.