2. Be Selective
Sports betting has become more appealing due to the variety of games and the number of ways people can bet on it, With the advent of online betting, online roulette games, we now have the ability to wager on virtually any sport, But this does not mean you should wager on all types of games, select the games you know you love and understand fully the ones you constantly follow and always updated on, betting on games you constantly follow and know the rudiments involved will help you win more bets than you loose.
Roulette, dice etc these are luck based games. The person who play these games don't need to know anything at all.
It is the sports betting where you need experience and knowledge to make a difference. You are right in general. Don't bet on volleyball if you never watched a volleyball game in your life before. Don't bet on a team which you don't know anything about. If you do these, then it won't be any different than playing dice.