I think I started on 4 but 6 is similar. I do have bugs though. Some medical words come up as misspelled by spell check. I don't understand why. I even have Steadmans on my computer but it doesn't connect or something. The platform is very intuitive and easy to navigate. I didn't learn everything about it before I started, but when I have a question, it's easy to figure out or look up what I need.