We are currently building a new Documentation System which when finished will replace the static pdf document that we're previously used. Each document is tagged to allow you to hone in on the subject you're interested in with the option of tag searching.
If you wish to come back to a document for later reading, you can add the page to your favourites (logged in members only).
Each document also has a Print icon should you want to print out the page.
The advantage of this system is primarily the ease of use for visitors to find what they need when first setting up and configuring their site. It also makes it much easier for us to keep the manual up to date as updating a pdf document is very time-consuming and makes it difficult to keep up with steady stream of upgrades.

We hope to be able to finish this soon. But, to create this amount of documents from scratch with the number of active staff we have is not easy.
Eventually we hope to be able to add other "Books" as well such as technical help for Theme and Addon authors as well as general coding guides.

Feedback as always is welcome.