Smith: The Woodpecker Method 2 - Positional Play (hardcover) Klassiker making this the first step

making this the first step in a two-volume curriculum for serious improvement

to assess your opponent

Trompowsky (1 d4 Nf6 2 Bg5)

2nd edition 2014

As noted by American grandmaster Alex Fishbein in the Foreword:

Smith: The Woodpecker Method 2 - Positional Play (hardcover) Klassiker making this the first stepImprove Your Positional Play with The Woodpecker Method 2 1000 Exercises for Faster and More Accurate Decisions After revolutionizing tactical training with its original method, The Woodpecker Method 2 now takes on the next frontier: positional decision making. This long awaited sequel builds on the famous "Woodpecker approach"solving hundreds of exercises repeatedly to program your intuition and boost speed, accuracy, and confidence at the board.