There are books actually that feature about the fundamentals of gambling, like "The Mathematics of Gambling" by Edward Thorp, and "Casino Gambling for the Beginner" by John Mepham, however reading these books will only provide clear insights and goals when gambling, but it will never guarantee easy winning. Personal experience will certainly matter the most. And note that gambling should not only be focused on how to play gambling effectively, but it should be more on how to approach gambling responsibly.