Curly Haired Redhead here!
I recently went from life-long straightening (I used to use an actual iron in the 90's when it was really long, ha). Both heat straightening and chemical relaxers, etc.
About 6 months ago I decided I was DONE taking all of that time, money, and effort to fight the way that I look (I still dye my hair, but that's more for FUN, less because I feel like I HAVE TO, if that makes sense).
Many deep conditions later, my hair is curly again like it was when I was a toddler, and it's healing (although the top layer is still heavy and fried, but healing).
I have just used dollar tree deep conditioning packs about once a week, rubbed oil into it when needed, and bought a few reasonably priced curl products. I have been sent this link several times to do an at home Deva Curl TYPE cut and I'm going to try it out this weekend!
My curls are very similar to the girl in the video, perhaps my curls are a little tighter and more redheaded - but I think her tutorial will work for me... and since several of my curly haired friends have sent me the link, I trust it enough to give it a shot.
https://youtu.be/Iwf0NejSuPY