Basically I'm a break even player. I have a 22% ROI over a sample size of 1500games (not sure if that's good?). That's mainly SNGS. I lose all my money playing cash games which I'm not rolled for. 

I want to take myself to that next level. I read on here in threads and I just get lost. I just play poker with a basic knowledge of the game. I don't know all this equity %, ICM, ranges etc. Sounds so technical. Is there any good advice on how I can take myself to another level and become a winning player and knowing  as much knowledge as you guys? Books? 

There may be no answers but I feel this is the right forum to ask.