After downloading the dbwrench2.zip file:

1. Extract (unzip) this file to any folder.
   
   The extracted folder structure will look like this:
   
   
   
2. Go to the bin sub folder.
   
3. Run the dbwrench2 script file to launch DbWrench.
   
   (i.e. Use a terminal window to navigate to the bin sub folder and type: ./dbwrench2)