How to customize the default UI in CQ5

The problem you want to use the old-style admin interface in CQ5.6 rather than the new touch style.

The Solution Go to the OSGi Console at:
http://localhost::4502/system/console/configMgr

Find the Day CQ Root Mapping component.

Edit settings by clicking on the wrench or pencil (depending upon where you are).

Change the Target Path to /welcome.html

Click on OK, log out and log in again.

If you want the touch interface back, revert /welcome.html back to /projects.html