What you can do is read a lot about different systems. But the question you have to ask yourself is how you want to make money from gambling. Do you really want to gamble properly and earn money purely on the basis of information and systems? Or do you want to go more into the gray area and keep yourself busy with things like arbitrage betting and relevant matters. And then of course I'm not even talking about matxhfixing. In principle, there is no watertight system that guarantees to always win money, those things do not exist, even though thousands of books have already been written about the casino.