This is a fairly comprehensive text about watercolour techniques though it doesn't go into a huge amount of detail about any one aspect of the techniques. I did learn a few new things...like (p94) creating texture by applying paint with paper and (p56) adding gum arabic to the colour you want to lift out. (haven't tried that).
It's not really a go-to book for examples of how to solve particular problems but gives a great overview. It includes materials such as paper, brushes and pigments. (I wasn't aware of the potential to combine acrylics with watercolour). Not sure whether I will keep this as a reference or just use the other books I have on technique (such as creating texture). I give it 3.5 stars. ( )