This has to be the most useful resource in NLP for me, NLP Modelling.
I modelled sales people throughout my career in business and found that I could be at least as good as them. I topped several sales forces I worked in, then I got promoted and I found that modelling was a skill that I could pass on to others using NLP. They all improved their performance as a result.
Since I started Excellence Assured I modelled top financial traders to see how they made money. I found I was also able to model their skills. I now teach others how to trade.
What is it that you would like to be good at? Find someone to model and learn what they do using NLP modelling.