The handbook should not cater only to FL Studio or Ableton. It should teach universal MIDI CC (Control Change) data, polyphonic aftertouch for hi-hats, and how to export standard MIDI files (SMF) for collaboration.
Programming is only half the battle; the other half is placement. The PDF dedicates chapters to: drum programming handbook pdf new
If you locate a PDF claiming to be new (published 2022 or later), verify it includes these six core chapters: The handbook should not cater only to FL Studio or Ableton