Chess Combinations: An Improving Players Puzzle Book

I am crap at chess. I spent a lot of money on books that I thought would at least make me competitive. Nothing worked. I think these chess books will all sit in a box gathering dust and one day I might get the urge to rejoin the local club and get butchered by 12 year olds so then may have a further look. (Generic review for all half finished chess books I will never finish)