A favicon is the small icon you see to the left of your blogs name. Every major website has one, and after this tutorial, so will yours! This is super easy and there is no need for photoshop!
Go to picmonkey.com and click edit a photo.
Open any photo. Any photo at all. it can be a photo of your arm, or of a cat or of a dancing penguin Just open any photo.
I really over explained that. It is really very simple.
Open your blogger dashboard and go to layout. Now it is time to upload the favicon to blogger.
WARNING: it does take as much as a couple of days to show up sometimes. I have no idea why. But as long as you see your new icon just to the left of that favicon edit section in blogger's "layout" you did it right!
Questions? As always, don't hesitate to ask!