As you can see my Square Foot Gardening book is quite old (copyright 1981). I know that Mel Bartholomew has learned a lot since he wrote this book and so I have used some of my Christmas money to order a like new copy of Mel's latest All New Square Foot Gardening, 2nd Edition book from a seller on Ebay. I can't wait until it arrives.
I tend to look at several sources to learn a new skill. At this stage in my life I think it is best to just stick with Mel's years of knowledge and try it. So I am putting away my other books: for now anyways.