Your next step is going to be to find a group close to you. I saw that you posted that you were in Glenview, so your nearest realm is going to be Yggdrasil. They practice in River Park (I think), and you can contact them on their
Facebook page to get details. You can also contact Tails regarding that realm.
If you want to educate yourself more in the meantime, then pop over to Belegarth.com to check out the Book Of War (the rules), and head over to Geddon.org to check out the Belegarth wiki, which has a lot of very informative pages on just about every aspect of the sport. If you have more specific questions, post again.
Also, welcome to the boards, and welcome to Belegarth.
Cheers,
Thurat