If you want to learn undergraduate classical mechanics, this is literally the greatest investment you can make towards that goal. Morin is the GOAT of all physics writers at the undergrad level. The problems + solutions are indescribably helpful (and quite challenging!). Warning: you need to have gone through an intro course in physics for this book to be most useful to you; do not try and use this as your first exposure to mechanics. Overall, this book is so good. This review will not do it justice; please go buy it for yourself (please don't be a pdf pirate! This book is well worth the money).<br>-Will Lancer