In a world of hucksters and over-promising, David Gaughran stands out for producing material with some integrity and a lot of detail. He produces a great deal of free material (alongside paid information) relating to the effective digital marketing of books — an essential part of book promotion these days, accelerated still further by the covid debacle. His free Starting from Zero course should be an essential starting point for any digital marketing neophyte. He approaches the Amazon borg with curiosity and humour, and demystifies the algorithms that increasingly rule our online lives.