Prana (also called Ether, Chi, Ki, or vital energy) is the universal force that animates all life.
All the elements—air, water, fire, earth—contain Prana and transmit it.

Through the MasterYourEnergy video series, everyone learns how to create both an internal and an external Prana Sphere, which Johanna calls permanent ‘fuel tanks’. 
These permanent vital energy spheres won’t be created automatically because they require awareness.
Over time, one learns to become a conscious Prana breather.

Some people claim to be nourished primarily by Prana.
On my own path, I have had personal experiences where Prana became a profound source of inner sustenance. These experiences were conscious and personal, and do not constitute a recommendation.

I invite you to follow the viewing order, as the video series has a logical structure.
Ideally, watch all 27 videos without trying to mentally understand the content. Then, start again from the beginning and repeat the process as many times as you need so that you can really  understand the content.
As additional support, you can use the book The Ancient Secret of the Flower of Life, Volume 2, Chapters 13 and 14, written by Drunvalo Melchizedek.