Here is your go to thread to tall about all things Fallout.

If you're on this site, than that means your most likely a Halo Player, and probably mostly a FPS gamer. Fallout is an rpg, you may not like many rpgs. I would say give it a try, before I played Fallout I didn't play many rpgs, I mostly played fps's. Beware, it's not like a Halo, the gameplay is significantly different, and there is a lot of dialogue. I would recommend Fallout 4, because it has the best gameplay, and than trying out both Fallout 3 and New Vegas. Once you played those and you enjoy a lot, and you have a PC, I would say tryout the older ones as well.