I usually code backends, but have been lucky enough to be allowed to try out Grails for a small webbased client. Since this is supposed to be a quickly made client and my experience with Grails is primarily listening in on the odd conference talk (you know, the talk held in the period you did not find a project relevant talk

, I need some good references. Many of the links Google turn up are beginners/introduction pointers. Most of the links seem to lack either my need for howto's or plain lookup's. Does the latest promoted book (or any other books for that matter) provide both? Or, does there exist good sites on the Net I haven't found yet?
Dag