This is Wittgenstein´s least interesting book, being only random notes dealing with art, music, religion and other areas of culture, taken from his notebooks over the course of his life. But W is never dull and it's a measure of the awe in which he is held that this book was even published. I can´t imagine publishing such a book by anyone else; certainly no philosopher. Those interested in W should go to nearly any of the other 20,000 odd pages of his works (but NOT the Tractatus! ), but those with little acquaintance be forewarned, though W may seem a shallow tepid pool, if you jump in you may never stop swimming.
Those wishing a comprehensive up to date framework for human behavior from the modern two systems view may consult my book ‘The Logical Structure of Philosophy, Psychology, Mind and Language in Ludwig Wittgenstein and John Searle’ 2nd ed (2019). Those interested in more of my writings may see ‘Talking Monkeys--Philosophy, Psychology, Science, Religion and Politics on a Doomed Planet--Articles and Reviews 2006-2019 3rd ed (2019), The Logical Structure of Human Behavior (2019), and Suicidal Utopian Delusions in the 21st Century 4th ed (2019)