Design For How People Learn by Julie Dirksen
At first glance, Design For How People Learn seems to be about e-learning. Don't let that fool you. More than 80% of the book is about learning - and teaching - in general. I'd say the first 6 chapters are pretty much required reading for anyone who is even marginally involved in teaching. For example, if you're giving a presentation, you are also teaching in a way, and you will most certainly benefit from the collected advice in this book.