The Phoenix Project is one of the best and most commonly recommended books on DevOps. So, instead of reinventing the wheel, lets all read it and talk about it!
There are a lot of affordable used paper backs on Amazon, you could get it as your free trial on Audible, or it is available in the Columbus Library for free as a physical or e-book.
The audiobook is also free on youtube in 5 parts. here is the first part:
https://www.youtube.com/watch?v=1QHy8MmNOJ4&ab_channel=Tech4PM
If you really can't read or listen to it (or found this late, or forgot), watch this summary:
https://www.youtube.com/watch?v=pjsINiG81dY&ab_channel=SnapTaleAudiobookSummaries
