The first part of the book, in which Poore discusses composition, is the most useful. He also has an interesting take on many of the old masters and provides useful insights on why painters like Rembrandt, Turner, Claude Lorraine, Rubens, Corot, the Impressionists and others were able to acheive the key effects that they did. At the end, he distills his wisdom into a helpful appendix, which contains a list of "don'ts" for the painter.