Full fear is on 0 full greed is on 100. If this works like it should this post will be auto updated with each refresh so you can ie bookmark it.
Why to check Fear and Greed ? So you can act accordingly ;) Some people say.. buy when others fear, sell when others greed.
But decide yourself.
If you dont know how to bookmark a page - check in google - http://lmgtfy.com/?q=how+to+bookmark+a+page+in+browser
You can bookmark this page as it will self-update.
Add it to your browser or so.