How The MIDI Drums & Guides Work
A pattern in the book shows you how to program it in your DAW (the software you use to make music). Below is an example from the Boom Bap Drum Guide. This drum pattern shows you where and when to place your kicks, snares, and percussion:
That pattern above is this drum beat after you program it into your DAW:
Additionally, each pattern comes with the stemmed out midi. Drag it, drop it, produce it.