It is a first step book to begin watercolor. There are a lot of information about watercolor painting: brush types, beyond brushes (using salt, spray bottles, masking fluid, palette, paper towel, toothbrush, plastic wrap, and even a sponge for creating distinct impressions), color schemes and also building techniques step by step so that one can learn watercolor from scratch to painting landscape or human body.
When I first started to learn the watercolor painting, I began noticing the color transitions, delicate details that were there all the time but I haven't seen any of them. As I come to understand; to see things in detail, one should draw.
If any areas look too dark, brush clean water on them, and use paper towel to remove pigment. The natural flow of pigment into water creates interesting, pleasing, and irregular textures and shapes.
Before trying to capture the variety of shades and colors found in skin tones, practice using one color or a mixture of colors. This allows you to focus on building up a range of values without being distracted by color possibilities.
Painting the entire tree in one color and adding another color in the center while the first remains wet creates a dark center and a glowing outer edge.