Wendy Jelbert begins well - materials, colour mixing and the watercolour and oil techniques of acrylic painting are well explained and illustrated very suitably.
Unfortunately her demonstrations let her down: Daisies on a cliff and Hens on a farmyard are hardly going to excite many people.
Even in a preliminary book, water, reflections, people, trees should be covered. Her only saving grace was a very good section on painting different types of sky.
In view of the price the book is worthwhile but you will soon want to move on.