I am a computer geek at heart, but I also have helped other practices with virtually no experience learn the basics of AC. I am amazed that some offices still have no electronics (maybe one computer) - I think the hardest part of starting with AC as a very limited use is getting your network up and running.
I have worked with many versions of Amazing Charts including some that are very buggy and have survived - the program could definitely use a manual and I hope that someday they get one, but I almost never used a manual for Microsoft products like Office as they usually are unintelligible and disorganized.