I have avoided this Hard Landscape Portfolio task because it is my weakest area. In that what I know about building and construction could fit on half a postage stamp. 200 hrs D says. I think that is optimistic, maybe it will turn out not to be.
The project consists of several parts and will train several core skills. Vectorworks familiarity. Understanding of the construction of out design elements: wall, pergola, decks and so on. Beginnings of familiarity with standard sizes and dimensions of materials e.g planks of wood (sorry timber!), breeze blocks, the humble brick and mortar.
Creativity in the original design of several garden objects, 12 to be precise. In total it's about 50 constructions drawings. If Vectorworks can be tamed that becomes MUCH less daunting, but that's a big IF