We have been working on making the main User Guide more accessible.
The latest version is here:
This is currently hosted on an Atlassian Confluence wiki. This allows us to have a collaborative space where team members can keep the main documents more up to date. It also allows us to easily create an exportable PDF that you can keep handy on your own machine.
This version supersedes the temp copy that I had posted in my DropBox, that we mentioned previously.