I'm assuming you're looking for information about Jost Nickel's book on groove playing, specifically a report on the PDF version with extra quality.
A four-step concept for integrating soft snare hits into any groove to add depth and feel. Linear & Go-Go Grooves: jost nickel groove book pdf extra quality
The book is sold through major drum retailers (Thomann, Sweetwater) as a physical copy with a download code. However, for the digital experience, go to Alfred Music or Jost Nickel's own Bandcamp/Store . I'm assuming you're looking for information about Jost
Reddit and drum forums are filled with posts saying, "I downloaded the Jost Nickel Groove Book PDF but the quality is trash." Here is why piracy fails specifically for this book: Linear & Go-Go Grooves: "extra quality" The book
The Groove Book is an exhaustive collection of grooves, rhythms, and exercises designed to help drummers of all levels improve their skills. The book, available in PDF format, covers a wide range of styles, including funk, soul, hip-hop, jazz, and more. With over 200 grooves and 400 exercises, this book is an invaluable resource for drummers looking to expand their musical vocabulary.