When you start to play poker, you will more than likely be playing lower limit games. To beat these games does not require you to become a masterful poker player, it primarily entails that you are able to outplay poor opponents. To beat good players at higher limits can be incredibly difficult, entailing many complex moves. However, winning at low limits is pretty straightforward.
What do I mean? Basically, other players won't be paying attention to you. They only care about their own cards; they don't care about you or your cards. They will play their hand as they always play their hand, regardless of whether or not you are in the pot. You are basically a ghost to them...but hopefully you will be a ghost that's slowly taking their money! If you want to beat these types of players, you simply need to a play a straightforward game that will win in the long run. For example, play tight, don't do any fancy bluffs, bet aggressively when you probably have the best hand, and utilize pot odds for your drawing decisions.
When it comes to deception with these players, slowplaying can work. These players are easily fooled into thinking they have the best hand when they hit a pair on the turn, so giving them a free card when you hold the stone nuts can be to your advantage. However, bluffing is simply an exercise in futility. These guys want to see if they have the best hand. They'll pay to see your cards just so they can see them sometimes! Don't expect to scare any fish at lower limits with an extra $2 bet.
Master the art of choosing starting hands, employing pot odds, and aggressively betting your winning hands. However, psychological strategies are generally useless. Your opponents are not thinking too deeply, and attempting any fancy plays will only hurt you.