I am taking the MCAT on Aug 14. I can’t take the classroom course because I have other obligations. Is the online course just as excellent as the classroom course? or is there a huge variation between the two?

I have about a year till I take the MCATS but i want a book to start reviewing this week. You know, too much preperation is never enough. If you please, could you tell me which books you used and how much they helped? Thanks!