There is hardly any strategy that can be applied to slots. You will probably, of course, encounter someone who claims to have developed thefool-proof' slots strategy system but please, ignore such advice. The slots don’t have memory, that’s why it is not wise to try to outwit them. The strategy can be represented only by a number of tips. Try to find something above 95%. Similar to other casino games, it is crucial to know the odds and probabilities of the machine you're playing. Make sure you know the payout schedule before you start pumping in your virtual coins. Before you start playing set for yourself a losing limit. Stop playing when you reach this losing limit. When playing remember that you can win as well as lose. The machine will not feel bad if you spend a lot of money and don't get anything back. Try not to spend all of your time on a machine that isn't paying out. Don’t be afraid of making higher bets if you are on a lucky streak with this very machine. Make lower bets if you are slumping. Find a machine that suits your bank-roll. Play dollar machines if you don’t have much money. Sounds obvious, but a lot of people forget! Never make high bets if you play slots you have never played before.

You must know exactly the game you are playing.
Always make sure that you insert the correct amount of coins into a machine. Your credits should be cashed out before you leave the machine.
Just have fun. Slots should be fun, not stressful. If you feel lucky increase your bets and vice-versa.