Best and worst books ? - Post your thoughts

I thought it would be good to post the best and worst books to help all, especially people with Pumps that are trying to understand and set Basal settings and other factors to help.

Please add a short Why Best or worst

best - definitely Pumping Insulin by John Walsh. The books covers everything from basics to advanced pumping, it uses a problem-oriented approach - you can find there algorithms to use when something is wrong and you don’t know what. It is a kind of book you’ll read in one breath, then put it in your library and reach for every time you need to work with your diabetes management, eg. changing regime, checking basal rates, calculating new insulin ratios when you gain/lose weight, diabetes management during sickness or sports…