This book is published by DK is an encompassing look at sketching. It's not an instructional book although you can get lots of ideas from looking at the classic and contemporary drawings included. Some of the sketches are from artist Sarah Simblet, and others from a myriad of artists.
There isn't much covered on the techniques. While there are topics like composition, light and shadow or perspective, they are mainly to introduce such concepts to beginners.
The book is heavy on subjects. The main chapters are on animals, botany, architecture, still life, body, portraits, costumes, imagination and many more.
It's a general guide to sketching and understanding the different sides to it. It's a bit too general for me though. For drawing books, I prefer those that are dedicated to specific subjects.
It's an interesting book to flip through, and isn't too expensive.
The US version of this book is "Sketch Book for the Artist". There's another edition with British English called "The Drawing Book".
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