You're right about one of Wong's books. Professional Video Poker is badly out of date. There are much better choices.
Dancer's Million Dollar Video Poker, while an interesting read, is more of a story about his play than anything that will help you learn about the game.
Optimum Play is a good choice, and though I haven't read Linda Boyd's book, I bet it is worthwhile too.
For learning video poker, I think one decent book is enough, then buy Frugal Video Poker software and practice.
For your sportsbetting questions, someone else will have to help out.
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