From childhood, Andrew Marr, the BBC political broadcaster, has been an impulsive drawer. He keeps sketchbooks of drawings as a graphic diary, recording sights that have attracted him throughout his life, as a far-travelled, professional correspondent and as an ordinary family man. More recently, he uses an iPad with the app "Brushes". On rare days, he might even get out the oil paints. He says he is untutored and doesn't go to classes but, judging from the numerous examples in this book, this is hard to believe, not because they are good - they are variable - but the good ones show clues of competent techniques which are more likely learned than arrived at by nature.
Nevertheless, this is, as Marr says, a book about what makes him happy. I relate to this, it makes me happy too. Though it's a reasonably broad analysis, chapter by chapter, of what drawing is - in Marr's view at least -it's light on depth and criticism. The few quotes and ideas he borrows are from friends and acquaintances, such as David Hockney and Anthony Gormley. He includes no illustrations other than his own sketches, excusing this on grounds of copyright and freedom to criticise his own efforts with impunity, the latter comes across more as modest self-deprecation than useful insight. He also says it is the most enjoyable thing he has written. I'm guessing that it didn't take him too long and wasn't at all difficult.
I don't wish to sound too negative, it is a pleasant read and I enjoyed it. But I think this was because I'm a chronic, impulsive, amateur sketcher too, and he confirmed my views rather than challenged them. It was, as promised, a short book, and fortunately, at the moment of purchase, much reduced in price. A difficult one for me to rate.