Before anything or any comments or ideas, this is a way I wanted to try to inform and update what a device tree is and what it has, and finally how Custom Recovery is created. So this is not a complete guide and it won't be! I never intended to do that.
Please take a look and may you take a few minutes to read the original guide. I had written myself that I intended to update the information. I hope that after reading the original guide you can go back and have a few minutes of reading and mainly practice to gain experience.
This guide comes to complement or update some important information. All thanks to @rokibhasansagar about first guide Make A TWRP Tree For Your Device & Build
Certainly, given the breadth of the subject, it should have many more parts. But understand about "Minimal" thinking and that I didn't intend to extend it any further than necessary. So the guide has:
