- Have your favorite Netbeans distro installed.
- Download and unzip the erlybird distribution. This one, for instance.
- Select "Plug-ins" from the "Tools" menu of Netbeans, and select the "Downloaded" tab in the dialog that appeared. Then you can hit "Add Plugins..." and select all the files that were extracted from the erlybird distro.
- After the plug-in gets installed, it will take quite some time for it to initialize. So be patient.
That's it just hit the "Install" button now on the bottom-left and the plug-in gets installed.