With blackjack being one of the most popular card games it was inevitable that people would constantly develop strategies and systems to succeed while playing the game. It is important to study as many different strategies as possible to ensure that you select a strategy that you are comfortable with when playing. This will help to ensure that you maximise your chances of making a profit. 
Start with the basics
Before studying any blackjack strategy it is important to be well acquainted with the basic concepts of blackjack and a basic strategy. This will help you to know when to hit, double down, surrender, stand, or split your hand. You can also use blackjack tables and practice to do card counting.
How to go about sourcing information
There are lots of books written on different betting strategies like the Martingale betting system and others, get hold of a good book and read it to improve your knowledge. A number of casinos make manuals available that describes the different variants of blackjack, ensure that you acquaint yourself with the rules and the basic concepts. Software developers of blackjack games have on their sites, lots of information available about the variants, the rules, RTP % and, the number of card decks used when playing. Use Google to your advantage and search for blackjack sites offering information and free games to practice your skills and strategy.
Learn a betting strategy
Every successful blackjack player uses a betting system when playing blackjack, this is important once you realise that the purpose of having a betting system is to reduce your risks and not to try and beat the dealer every time. The best way to learn a betting strategy is to use an internet search to find information, read books, and visit blackjack websites that write about strategies. Betting strategies can be very basic or very intricate models requiring many calculations while betting. The essence is, it is a strategy that can be implemented when placing your bets reducing your risk while attempting to make a profit.
