To follow this tutorial you need to understand the architecture of the AI Engine-ML as well as the art of buffer descriptor programming:
A short introduction to AI Engine-ML architecture is available here.
The various memory levels contains DMAs used to receive/transfer data to/from memory or Programmable Logic. These DMAs use Buffer Descriptors (BDs) that contains the parameters of these transfers. The best way to program these BDs is to use Tiling Parameters that are introduced here.