Can anyone recommend any good books about betting? I'd like to read something truly useful, not just motivational stories.

I also looked for books on betting, but honestly, half of them are more about psychology. It's much more useful to simply watch the lines and see how the odds change. I often open the online sports betting ontario page and study the markets, because they offer quite a lot of betting options for a single match. Sometimes, there are dozens of markets for a game: totals, correct scores, handicaps, and so on. Even just analyzing these markets can help you better understand the bookmakers' logic. And books already help structure your thoughts.