For me, it's easily the hardest sport to bet and baseball is the sport I know the most about. It's just too unpredictable, whereas with a sport like NBA and NFL (or NCAA) you can tell a lot by what the lines are set as and how the lines fluctuate throughout the days.
I've had a lot more luck going down the list of prop bets and picking out a few that catch my eye. Prop bets are generally just over/under on team hits, runs, home-runs ETC