I want he’d a great video, called lasagna gardening. https://m.youtube.com/watch?v=nuNUTTFYArY
I’ve been saving cardboard, and my husband is going to pick up some pallets for me soon. The thing that wowed me the most, is that this guy had gone to his local grocer, and asked for fruit and vegetables they were throwing out, and he had a big box of it and just dumped it into his raised bed with the rest of this compost. I had never thought to do that,but it would certainly add a lot of compost material to the pile!
There's also a series of books:

Ruth Stout was the genius behind this type of gardening, IMHO. She advocated for using tons of straw when gardening.