Play as much as you can, be a sponge..
Starting off, the best way to begin is by actually playing, seriously. Best to start with free-rolls, no pain to lose free money. But if well-played, you can make a tiny amount of money. If you play a lot of free-rolls, play them seriously: pay attention to what winners did, and what you did, when you won.
Watch a lot of youtube on poker, read up on strategy, tactics.
Only when you are comfortable, play low entry sit and goes, and MTT. Stay away from the cash games. It is better to enter a tourney, know you max loss is entry fee.
Others pointed out: Patience--success, like ppremium cards only come occasionally, it's better to be patient and wait for them.
Players here are good: Patience alwo means, let a hand develop; don't shove and expect a win because you were the hand favorite pre-flop.