Grandmaster Boris Alterman who visited Bartleby's last summer has written a new book "The Alterman Gambit Guide-White gambits" This is an insructional book for club players. It does not show a move followed by 3 pages of analysis understood only by GMs. Chapters are accompanied by a section called "What we have learned which discusses principles. The are self tests and solutions with discussions so that even Bartleby's Club members will learn a lot. For more information see www.qualitychess.co.uk
I have a copy which members may look at at Bartleby's.