My interest on blackjack started from Ed Thorp book for blackjack and after I watch the movie about student beating casino through blackjack. I study card counting and basic matrix table to play blackjack properly.
But this strategy is almost impossible to live blackjack or any online blackjack available while physical casino already counter this strategy too.
I think Arbitrage betting is my only known strategy that can actually beat a casino if done unnoticed by casino operators.
For one, not everybody can be an Ed Thorp. He's a math prodigy. He's an MIT graduate student. I'm afraid you can't just self-study to become one. I've read the book Bringing Down the House by Ben Mezrich. It was also about card counters beating the casino. But, again, they're composed of math savants from MIT. They're exceptionally gifted people, not ordinary mortals.
But their strategy simply won't work in an online casino. Good luck counting 8 decks of cards reshuffled every once in a while. But even if you can, unlike brick-and-mortar casinos, monitoring in online casinos are highly automated. Anybody constantly winning against the house is easy to detect. Your funds could be locked, account disabled, functions frozen anytime.
How about value betting?