Renaud and Kahn, The Art of the Checkmate is excellent.
I do all puzzles both on this site and other sites all most daily with a rating here around / just under 2000. Have read one basic tactical book and bits and pieces of a couple more. My rating here is around 1000, rapid 30-60 minute games. Do you think it worth while for me to look into this book?
Not kidding, but chess has given me a reason to go on living in my empty life I am living today, I look forward to my next move the next day, be it luck, ingenious or just plain dumb, In the military chess helped me get through some hard times as well!!! Kept my mind off the bad happenings, and thoughts.
When my wife died of cancer, chess was my therapy.
That was a long time ago and I'm married again. We've been together 23 years.
That's good she's dead. I hope you will get same disease too.