Greetings. Welcome back to school. Here is a free resource for everything you need to get started in the amazing experience of role playing games. Pathfinder is based on DnD and is totally free!!!
The first document you need to get is the core rule book, http://paizo.com/download/pathfinder/CoreRulebookErrata_5.0.zip
Read through it, get to grips with the basic rules and start creating your character. You can download die simulation apps from itunes or the play store.
I will be starting a pathfinder club in Chatsworth provided that I have players.
Any questions please feel free to contact me.