At first it was hard for me to paint. I always liked to draw with a pencil or ink. Recently I came across this great ways to paint. The brush strokes, use of the materials, blend colors, easy methods to paint. It was like a re leave for me. You can fin great stuff online. There are so many great books that you can get, basically on any material. Here is the ebook that I suggest Easy Drawing and Painting In this book you can learn the perspective, the lighting, human figures, the proportions, come up with your own drawing style. This book is so great that you can become an expert. Everything you need you can find it here.
Here is more info about it Drawing/Painting
Cartoons and Caricatures