With Steve's help (well it was more than help) I have added a summary of the AgilityNerd Blog topics to this Blog. This is a great resource - there are not many places where we in Australia can see examples of courses analysed and different handling and training discussed.
The latest posts feature courses from a Dana Pike advanced handling seminar. Steve usefully has a index to previous posts arranged by category so that you can find other courses or handling techniques from the archives.
With Helix Fairweather's Joey's Journal and Karen Pryor's Clickertraining I think we have most of our training needs covered.