I have the first, third and fifth editions of the Strobel book. The major differences are in the quality of the reproductions and the detailed run down of cameras and their features at the back of the book. It appears to me that very little of the real meat of the book has significantly changed over the years.
I also have the books commonly recommended by Stone, Simmons, Dykinga and....one other I think.
The Simmons book pretty much covers all the basics in a very basic and informal manner. It's like story time with Uncle Steve. Stone's book is clear, concise, and complete but, also brief. Dykinga's book is not so much about how to do Large Format photography as it is about how Jack Dykinga does it. Which is interesting and can be inspirational (his story is kinda extraordinary in my mind) to be sure but, maybe, not really the best introduction.
Strobel's book on the other hand covers everything and does it well. You'll refer back to it over and over. It is a good investment.