[lee-usmle]

See these threads

I recommend you read this thread
http://www.usmle-forums.com/usmle-s.../786-usmle-step-1-preparation-books-plan.html

As for more details about books go here
Best USMLE Step 1 Books

As for the time needed see here
http://www.usmle-forums.com/usmle-s...s/364-time-needed-prepare-usmle-step-1-a.html