I found the suggestions about safety, various methods of lifting heavy materials and the general description of rock wall building extremely helpful. In fact, he has some ideas of lifting large (heavy) rocks that I did not find in the other books I purchased and it has been just the right advice. However, when using this book as a guide, if you do not have "perfect" fieldstone or limestone rocks to lay, it leaves you wondering what to do with the rocks you have in YOUR yard. Since I live in the west and we have an abundance of volcanic "not so good" rocks which I wanted to use, this booklet was of limited assistance in helping me figure out how to use the rock I actually have available (and for free too, except for the labor of finding and hauling them). Great slabby rocks are unusual in this part of the country, so a book telling how to lay only nice, flat on-all-sides rock was of limited assistance. Thankfully, a 1976 Building Stone Walls by John Vivian (Garden Way Publishing) helped me figure out how to use what I actually have to build with.