The documentation in Viewer put me off - it seemed a complete mess. Things I was searching for just weren't there.
You have to read the documentation in the recommended order, not skipping the basics. Then it comes together very quickly.
If you don't learn the basics in the beginning, then you don't know what to search for. Trying to learn the system by reasoning by analogy to some different product and hopping around searching for terms is guaranteed to cause confusion and frustration, both of which are easily avoided by learning the basics first.
That 9 delivers vast capability is a good thing: it gives you value for your money. That also means there's more to get your head around in the beginning.
A suggested plan for learning 9 / Viewer:
Begin with Read Me First. Read the topics in order (you can skip the huge Changes and Additions topic) up through the end of the Basics chapter. Take a break from straight reading from time to time to read topics in the Examples chapter, beginning (of course) with the Introductory Examples section. Watch the videos, especially the tutorial and other introductory videos.
That sounds like a huge amount of reading, but it actually goes very quickly. Spend a couple of days on serious reading and you'll learn how to do marvelous things with low effort.
What I am looking for now is a street map of North Wales UK and a hi-res satellite image base.
Depending on what you want those for, the easiest way to get those is to use image servers. There are endless example topics (and videos) that use them. Don't look on the net for those. Read the manual in the recommended order and you won't be able to avoid learning about the ones that are already built into 9.
If you don't mind a rant: it always baffles me that people will spend many hours and days searching the web looking for shortcuts to knowledge, but they won't spend a few hours learning a new, sophisticated application in an orderly way by reading the manual in the recommended order and watching videos. Don't be that guy! :-)