Step 1: Search for Scripts
once you have greasemonkey on firefox, all you need to do is search for scripts. go to http://userscripts.org/ and search for a script in the SEARCH box.
Step 2: Look for Scripts
now type in what you want to search for. and you results will show up.
Step 3: Install the Script
click on the icon and click the INSTALL button to install. a message beside the greasemonkey face should appear saying that it has been installed successfully.
Step 4: Have Fun
now have fun with your newly installed scripts!!!