HelpfulGardener.com

I have recently read a very good 1993 book called "Start with the Soil" and I'm interested in more modern books that are as good or better. They have not put out a new release of this book since 1993 and probably because all of its still good info. But surely more has been learned about Humus since then.

So have any of you read that book and know of anything else to recommend?