This one is a nice addition for an introduction to the visual rhetoric category. It's an interview with graphic designer Paul Rand, who made the ABC, IBM, and UPS logos. He talks about form and function. https://www.amazon.com/Paul-Rand-Conversations-Michael-Kroeger/dp/1568987250/ref=sr_1_9?ie=UTF8&qid=1477832064&sr=8-9&keywords=paul+rand
This one is good too. The Design of Everyday Things by Don Norman (https://www.amazon.com/Design-Everyday-Things-Revised-Expanded/dp/0465050654/ref=sr_1_1?ie=UTF8&qid=1477846240&sr=8-1&keywords=design+of+everyday+things) is an introduction to the physical design of objects and what they tell us by how they look or function.