Over the past few years, we have started moving to all raised bed gardening.
Here is a great reference for raised beds. It is The Complete Guide to Raised Bed Gardening by Joe Lamp'l from Growing a Greener World. It is 101 pages and covers just about everything you can think of when it comes to raised beds. The link below takes you to a landing page where you can get a copy. It is a download and in pdf format. I have a copy, but I have no way to attach it here.
https://growingagreenerworld.l...
You can also watch his podcast.
Raised Bed Gardening, Pt. 1:
https://joegardener.com/podcas...
Raised Bed Gardening, Pt. 2:
https://joegardener.com/podcas...
His website is a great reference. Hope this helps.