Here's a collection of current and useful Dojo demos and tutorials to help you get started with Dojo:

Demos

• dojo.moj.oe, Peter Higgins, SitePen, Dojo Committer
• Real-time Survey Demo, Peter Higgins, SitePen, Dojo Committer
• Dojo Feature Explorer, Shane O'Sullivan, Nikolai Onken, Peter Higgins
• Data in the Browser with Dojo, Rob Coup, Dojo Contributor
• Psych Desktop, open source web desktop project based on Dojo
• Dojo Campus, Nikolai Onken, Dojo Committer
• Dojo Feature Explorer, Nikolai Onken, Dojo Committer, and Shane O'Sullivan, Dojo Contributor

Core

• Dojo QuickStart Guide, SitePen
• Functional Fun with JavaScript, Eugene Lazutkin, SitePen, Dojo Committer
• X-Domain Loading using the AOL CDN
• Extending dojo.query, Alex Russell, SitePen, Dojo Project Lead
• Improving Component Communication, Mike Wilcox, SitePen, Dojo Committer
• Creating Your Own $ with Dojo, Neil Roberts, SitePen, Dojo Committer
• Function Ajax with Dojo, Neil Roberts, SitePen, Dojo Committer
• The Dojo Parser, Peter Higgins, SitePen, Dojo Committer
• Are You Sure You Should be Subclassing That? Neil Roberts, SitePen, Dojo Committer
• JavaScript Metaclass Programming, Neil Roberts, SitePen, Dojo Committer
• dojo.DnD Complete Documentation, Eugene Lazutkin, SitePen, Dojo Committer
• REST and RPC Relationship, Kris Zyp, SitePen, Dojo Committer
• BEA Workshop with Dojo, James Bayer, BEA
• XHR Plugins with handleAs, Neil Roberts, SitePen, Dojo Committer
• 3 Ways to Upgrade your HTML with Dojo, Neil Roberts, SitePen, Dojo Committer
• Dojo JSON-RPC + Java, Kris Zyp, SitePen, Dojo Committer
• Firebug Lite and Dojo, Mike Wilcox, SitePen, Dojo Committer
• Dojo Drag and Drop, Part 1, Revin Guillen, SitePen, Dojo Contributor
• Using Dojo for Client-side Validation, James Harmon, Object Training Group, Dojo User

Dijit

• Hello Dijit, Simon Bates, Adaptive Technology Resource Centre, Dojo Committer
• Widget Prototyping, Mike Wilcox, SitePen, Dojo Committer
• Develop a Dojo-based Blog Reader, IBM Developer Works
• Declaring Class, Dojo Book
• TinyBuddy IM, James Burke, AOL, Dojo Committer
• dijit.Tree and dojo.data in Dojo 1.1, Bill Keese, IBM, Dojo Committer
• Templating Made Nicer with Jaxer, Dijit, and dojo.query, Tony Issakov, Dojo User
• Dojo 1.1 Custom Widgets, Peter Svensson, Mashup Station, Dojo Contributor
• Accessibility, Becky Gibson, IBM, Dojo Committer
• Usable Directory Listing with Dojo, Sam Foster, SitePen, Dojo Committer
• Developer Accessibility Requirements, Becky Gibson, IBM, Dojo Committer
• Adding setTitle to TabContainer, Peter Higgins, SitePen, Dojo Committer
• Adding setTitle to TabContainer, Peter Higgins, SitePen, Dojo Committer
• Creating Dojo Widgets with Inline Templates, Dustin Machi, SitePen, Dojo Committer

DojoX

• Simple Grids, Bryan Forbes, SitePen, Dojo Committer
• Diving Deeper into Dojo Grids, Bryan Forbes, SitePen, Dojo Committer
• Grid 1.1 screencast, Mark Hays, IBM, Dojo Committer
• dojox.gfx Complete Documentation, Eugene Lazutkin, SitePen, Dojo Committer
• Dojo Offline
• Rating Engine with GFX, Tobias von Klipstein, Dojo User
• Cometd-based chat examples: Cometd Chat and iPhone Cometd Chat
• JSONPath Support, Kris Zyp, SitePen, Dojo Committer
• Pluggable Web Services with SMD, Kris Zyp, SitePen, Dojo Committer
• Real-time Widgets with the Dojo Toolkit, Dylan Schiemann, SitePen, Dojo Co-founder
• Floating Labels for Charts, Peter Svensson, Mashup Station, Dojo Contributor
• Syntax Highlighting with Dojo, Tony Issakov, Dojo User
• A million records in the grid, Matthew Russell, Digital Reasoning, Dojo Contributor
• Web-based spreadsheets with OpenOffice.org and Dojo, Learn about the server-side capabilities of OpenOffice.org, Oleg Mikheev and Doan Nguyen Van, JavaWorld.com
• AOP Aspect of JavaScript with Dojo, Eugene Lazutkin, SitePen, Dojo Committer
• Dojo Charting: Event Support has Landed, Eugene Lazutkin, SitePen, Dojo Committer
• A Beginner's Guide to Dojo Charting: Part 1 of 2, Doug McMaster, SitePen, Dojo Contributor
• A Beginner's Guide to Dojo Charting: Part 2 of 2, Doug McMaster, SitePen, Dojo Contributor
• Dojo Charting: Widgets, Tooltips, and Legend, Eugene Lazutkin, SitePen, Dojo Committer
• RESTful JSON + Dojo, Kris Zyp, SitePen, Dojo Committer
• Replacing the Flash Flickr Badge with Dojo, Dylan Schiemann, SitePen, Dojo Co-founder

Utilities

• DOH + Selenium, Rob Coup, Dojo Contributor
• DOH Unit Testing, Dojo Book
• Custom Builds, Dojo Book
• Dojo Toolkit for Drupal, Chris Barber, CB1, Dojo Contributor
• Dojo-mini, Peter Higgins, SitePen, Dojo Committer
• Easy, Repeatable Building/Deployment of Python+Dojo Projects, Kevin Dangoor, SitePen, Dojo Contributor

Dojo Goodness Series

• Matthew Russell, Digital Reasoning, Dojo Contributor
• Dojo Introduction
• Dijit Introduction
• Animation Stations
• Easy Ajax
• Simple Network I/O
• A Million Records in the Grid
• Injecting Dojo After Page Load
• Dojo the Definitive Guide, Book Preview
• JSONified Cookies
• GFX Foo with FX

Misc

• Navigating in an IE Modal Dialog, Shane O'Sullivan, Dojo Contributor
• Advanced JavaScript Debugging Techniques, Mike Wilcox, SitePen, Dojo Committer
• Fusion Charts with Dojo.E, Bob Buffone, Nexaweb, Dojo Contributor
• Dojo for Sling 101, Lars Trieloff, Day Software, Dojo User
• Dojo Modules for AIM, James Burke, AOL, Dojo Committer
• Dojo + jabsorb, Kris Zyp, SitePen, Dojo Committer
• Medryx Observations, Maulin Shah, Medryx, Dojo Contributor

Books/Magazines

• Dojo: The Definitive Guide, Matthew Russell, Digital Reasoning, Dojo Contributor
• Mastering Dojo: JavaScript and Ajax Tools for Great Web Experiences, Craig Riecke, Rawld Gill, Alex Russell
• Dojo: Using the Dojo JavaScript Library to Build AJAX Applications, James Harmon, Object Training Group, Dojo User
• Dojo Fundamentals, Matthew Russell, Digital Reasoning, Dojo Contributor
• Dojo: The JavaScript Toolkit with Industrial-Strength Mojo:, Linux Journal, July, 2008, Matthew Russell, Digital Reasoning, Dojo Contributor

Tests (1.1.1)

• Dijit Test Pages
  • Form Widgets
  • Layout Widgets
• Dojox Projects:
  • Charting
  • FX
  • GFX
  • GFX 3D

Tests (1.0.2)

• Dijit Test Pages
  • Form Widgets
  • Layout Widgets
• Dojox Projects:
  • Charting
  • FX
  • GFX
  • GFX 3D

Presentations

• SlideShare, slides uploaded by many Dojo Committers
• Achieving a runtime CPAN with Dojo's XD loader, James Burke, AOL, Dojo Committer
• Accessibility and Internationalization, Adam Peller and Becky Gibson, IBM, Dojo Committers
• Dojo 1.0.2 Screencast, InfoWorld Videos
• The Case for WYSIWYG Ajax Tools, Scott Miles and Steve Orvell, WaveMaker, Dojo Committers
• Dojo 1.1, the Enterprise Effect, Bob Buffone, Nexaweb, Dojo Contributor
• Can We Get There From Here, Google I/O, Alex Russell, SitePen, Dojo Project Lead

Blogs

There are many blogs exclusively or partly devoted to dojo.

• Dojo's own blog (RSS)
• Dojo Campus cookies (RSS)
• Sitepen's blog (RSS) has many articles about dojo
• Eugene's blog (ATOM) also has many articles about dojo
• Sam's blog sometimes has dojo articles.
• Dojo Toolkit Aggregator (RSS) collects articles from varioius sources, but not sure exactly where. Perhaps a superset of all of the above.