When switching to a new IDE, program or environment, there's always an awkward phase during which you just don't know where to find anything. I'd been using the command prompt to run Rails commands for quite a while. However, you just can't do that with Netbeans.
There are a number of things that you really need to get yourself going on Netbeans. Among them are creating new Rails projects, running migrations and generators, installing plugins and running Rake tasks. Once you know how to do these things with the Netbeans GUI, the rest is easy.