Understanding before Moving 2 - Queen's Gambit Structures

The concept is extremely attractive to amateur players: whatever your strength, it carries the promise of learning or revising some general strategic knowledge in an easy way. GM Mathew Sadler, New In Chess Magazine 05/19.
In summary, this book will be invaluable to any serious student of the Queen’s Gambit, particularly the Exchange Variation and Carlsbad structures. Any player who plays d4 but does not play a quick c4 follow-up (for example, the currently trendy London System followers) may well be sufficiently enthused to “upgrade” their Queen’s Pawn opening to a Queen’s Gambit. The emphasis on understanding via pawn structure analysis will help any student of chess even if do not play 1.d4. Highly recommended ! John Upham, Cove, Hampshire, 22nd August, 2019, BRITISH CHESS NEWS.