I love to read books, and would love to hear your opinions.

What single publication was very instructional..??
I read a large book about Zen Buddism..I think it hit a nerve..
I’d have to say a Reader’s Digest Book about Vitamin’s and Mineral’s and Amino Acids..
..which was my dad’s book..he gave it to me to use for my diet(I was over-weight)..
Self-Help Books..I have never really used a self help book/
nothing..as you might suggest.