Having just had a poke around the rev-ed website, I can see the problem a rookie could face: There are a lot of outdated documents and pages which will distract new users. Most of the old hands use just 3 documents:
Manual 1 (Intro); Manual 2 (Commands) and Manual 3 (Interfacing)
...and of course the forum.
The 14M, 28x1 and 40x1 are the newest offerings. At last report, the 28x2 and 40x2 were still under development.
Technical: lets have a cleanup of the website. There is a lot of outdated information needing deletion or updating.