The absolute easiest way to learn how to do a rolling backtake, condensed from the Rolling Backtakes for Everyone instructional https://www.grapplearts.com/rollingbacktakes.
00:32 Step 1, The Dope Mount Sequence
02:56 Step 2, Scissor Wedge from Leg Wrestling
05:37 Step 3, Dope Mount to Rolling Scissor Wedge Backtake
07:25 The Most Common Mistake
08:59 Step-by-Step Review

If you can do a forward somersault then you can do a rolling backtake. https://www.grapplearts.com/rollingbacktakes

A simple and effective way to take the back from the north-south position that your opponent won’t see coming taught to me by Erik Paulson. Grab my free BJJ app to get more techniques, tips and training articles on iOS https://apps.apple.com/us/app/bjj-master-app-by-grapplearts/id1308072068 or on Android here https://play.google.com/store/apps/details?id=com.grappleartcontainer