You can access the EasyLayouts demo, where you can login to the backend and modify the layouts being used, at https://demo.easylayouts.net.
Useful Tips
Before you dive in to the backend of demo site it may be worth watching the video below about how to use EasyLayouts in the backend
Use click 'Click for demo info' on the right site of the demo site for login details.
Switch EasyLayouts 'off' and 'on' using the 'Disable EasyLayouts' checkbox on the right site of the demo site to see what effect it is having on the page output.