Do whatever you want, but I think you should focus most of your studying time on working through those 599 practice questions. Are you able to find the section I'm talking about? It's not that straightforward to find - I didn't know it existed until recently either.
Yes i did thank you. Im doing the Practice and Final. But if i purchased the book could i just sign in as normal? Or do you suggest using the Demo sign in? Or is this a different purchase?