Grails: first steps

What are the first steps to grails heaven ?

http://groovy.codehaus.org/ (groovy)
http://grails.org/ (Grails, comes with groovy included)

a nice IDE (STS) comes comes
http://www.grails.org/STS+Integration

How to install grails, an excellent leed in grails
http://www.grailsexample.net/  (still unter construction)

But in the next step, we start with groovy.

some more reference to the newbie 
http://groovy.codehaus.org/For+those+new+to+both+Java+and+Groovy