Tim Ferriss wrote a book on how to learn things fast. It's called 4 Hour Chef: https://www.amazon.com/4-Hour-Chef-Cooking-Learning-Anything... He gives a lot of tips but it's up to you to test them out and see what works for you.

http://www.amazon.com/The-4-Hour-Chef-Learning-Anything/dp/0... is quite fun and as much a book about learning to learn as about cooking. It's sort of a hackers guide to cooking. Or agreed...Jamie is a good start too. One of the original ones (http://www.amazon.com/Return-Naked-Chef-Jamie-Oliver/dp/0718...) got me started.