I'm starting to think clients shouldn't use it.  I am tired of losing money because clients don't want to pay me to troubleshoot for hours, days, sometimes weeks with quickbooks, being told different wrong things.  And now I am stuck not even 1/4 of the way through the beginning of training or certification and can't get past a question and have no resources to look up an answer - just stuck.  From reading others reviews it sounds like a waste of money and time.  It's ridiculous and unprofessional.