Use the Revel command line tool to create an empty project in your GOPATH and run it:
$ cd $GOPATH
$ revel new myapp
~
~ revel! http://robfig.github.com/revel
~
Your application is ready:
/Users/robfig/code/gocode/src/myapp
You can run it with:
revel run myapp
$ revel run myapp
~
~ revel! http://robfig.github.com/revel
~
2012/09/27 17:01:54 run.go:41: Running myapp (myapp) in dev mode
2012/09/27 17:01:54 harness.go:112: Listening on :9000
Open your browser to http://localhost:9000/ to see a notification that your app is ready.
The generated project structure is described here.