1. Install the extension if you haven't already
2. Click on the Icon in the Browser Toolbar
3. Go to Options
4. Add the distracting sites you want to block to the Blacklist (line by line) No WWW!
5. Close the options and allow access in private mode for effectiveness
6. All set! Try it out by going to any of the sites in the blacklist
7. To complete the puzzle move, rotate and place all the pieces on the right into the gray area so they fit perfectly