TheStaircase is a learning method for SC2. It is not meant to be to take you to GM. Depending on your talent and your dedication you should try TheStaircase for about 100 to 300 games.

English guide (GoogleXLS)
German guide (GoogleXLS)

For Protoss it is important to learn how to wall in PvZ. You don't need a wall in the first 20 games (in Bronze), but afterwards you should train how to wall as Protoss.