Bats
There are a wide range of bats available, but most importantly you need to have one that is the right size and weight for you.
Bats come in different sizes and handle lengths.
Try and use a bat which when stood upright next to you has the top of the handle reaching the top of the thigh.
Weights of bats also vary and are measured in pounds and ounces.
Some stars such as Lance Klusener are renowned for using heavy bats, but it is far easier for upcoming players to develop their technique with a much lighter bat.
A good test to see whether the weight of the bat is right for you is to swing the bat with only the top hand (left hand for a right handed batter).
If you are able to produce reasonably good straight and cross batted strokes and a controlled backswing then the weight of the bat is right.