Reddit mentions of Play with Your Dog (Dogwise Training Manual)

Here are my favorite positive training book

The Other end of the Leash: this one is a really fantastic book on understanding dogs, dog behavior, interacting with them, building a relationship with respect versus dominance. Anything by Patricia B. McConnell is going to be solid advice and techniques.

101 Dog Tricks - just gives a really good guidelines on luring your dog into tricks versus forcing them, plus a lot of good tricks that help with mental stimulation.

Play with Your Dog: Just another really good book on good training, playing, and positive relationship building.

Ahimsa Training manual: This is the training manual from one of the best training facilities in Seattle. There are really good positive trainers.

BAT Book: Behavior Adjustment Training by Grisha Stewart: This book was a life saver for me. Shibas are prone to being really reactive and sometimes have issues with aggression and predatory drift issues, and this book really digs deep into understanding your dog and helping them make the right choices and building them up for success. I personally don't think you need to have an aggressive/reactive dog to get a lot of good info from this book.

Anything by Cesar Milan will NOT be positive training methods. He very much does not follow that philosophy. Positive training techniques do not use force, aversion, do not believe in alpha dominance theory, no physical punishment. It is a give and take type of relationship. Cesar Milan style tends to not do well with primitive breeds especially the Japanese dog breeds.