The Yu-Gi-Oh 5D's Rule Book
This is the key formula of dueling! The only new thing here is Snychro summoning, which is pretty big, it's a basic over view of dueling so you know what your doing, now you just need cards and an opponet!!
If you are interested in Yu-Gi-Oh 5D's, go to 4kidstv.com to watch season one in english dubb. If you want the rest of the seires, it's in Japanese so to get those episode in english sub check out MrPrisman on Youtube! He has great quality in HD.