DITA Users offers self-directed training in DITA from A to B - from Authoring to Building your DITA projects, then publishing them to web (XHTML), print (PDF) and Help (Eclipse).

Use the browser-based DITA Storm editor to author structured content in your own workspace folder.

You don't have to install anything or know XML to begin topic-based structured writing today. A modest investment will help you develop skills you can transfer to the top DITA XML Editors and XML Content Management Systems.

You can have multiple projects in your personal workspace.

Each project includes source files, build files, and output files. Process your files to HTML, PDF, Help, and other publishing formats with the DITA Open Toolkit on our server. Develop your DITA skills and download the results, or publish links to your work on our website.

You can show your colleagues and clients your work on the web. 

DITA Users offers a Member Directory where you can find others to work with you in your region - over 300 members from 20 countries around the world.

DITA Users was the first in a network of websites in support of DITA. Each of our websites is optimized for some community-oriented function.

DITA Users - helping members get started with topic-based authoring using a web-based editor, the Open Toolkit on the server, and a personal workspace folder on the web.
ditausers.org

DITA Infocenter - the DITA architectural and language specifications, and the OT User Guide, in an Eclipse Help format.
ditainfocenter.com

DITA News - a blog aggregator, a mailing list, and a newsletter on DITA.
ditanews.com

DITA Blog - a group blog for DITA information developers (based on WordPress).
ditablog.com

DITA Wiki - resources in a format that encourages comments and discussions (based on MediaWiki).
ditawiki.org

and a couple of other sites to come soon, including

DITA Tutor - a set of self-paced and instructor-led DITA Tutorials (based on a Moodle LMS)
ditatutor.com