I’m agree with sorta, i see all courses before , and i able to do the same question “how?”, we learn a lot of how modifiers works, or tools like extrude, inset, bevel, etc, but we need more practice, more examples and exercises. We need to see how model an axe, a sword, table, chair, chain and another common objects from skratch, to have an idea…
Sorry for my bad english, is just an advice…