The training requires any iPad and a stylus.
Paper, a mechanical pencil, an eraser and a large-scale ruler. (Ideally an iPad pro and an Apple Pencil)
For other iPads you will need to buy an Adonit stylus (sensitive to a type of pressure) or a Wacom creative stylus 2. The market is filled with various styluses for capacitive displays now — but it is really desirable for a stylus to have a pressure force. It is important. Cheap styluses don't have it.
The cost of 34 lessons — $240.