Martingale betting system
This is the simplest one. Start with an initial fix bet. Double your bet every time you lose. Your losing streak can not last forever and when you finally win your wager you will come ahead of the house recovering all previous lost bets. Then you start all over again with your initial bet. However, this system is not flawless: you need a very large bankroll to use it and casinos have wager limits so you can not increase your bets indefinitely. Be careful with this system, you can soon find yourself betting a couple of hundred dollars to try and recover an initial $20 loss.
Progressive betting system
There are many card counting systems but the easiest are based on the "one-level" method. When you use such a system you keep track of the played cards by assigning a tag to each one of them. There are three different tags: -1 (10, J, Q, K, Ace), 0 (7, 8, 0) and +1 (2, 3, 4, 5, 6). After the shuffle you start adding the tags of each card from every single hand dealt (your starting count is 0). You will modify your bet only when the count reaches a certain level (different systems have different levels). Generally, you should maximize your bets when the count is positive and minimize them when the count is negative. This is a very rudimentary form of card counting that can be tried by the casual player, if you happen to have a casino around that doesn't mind.
ęCopyright Ted Knuden 2018.
Other recommended strategy pages: