One of the best books I’ve read on the subject of negotiation is Getting To Yes by Roger Fisher and William Ury. They have gone on to write additional books and coordinated lectures on the topic, but for a quick read ( I think 150 pages or so) this book is the go to for negotiation.
Negotiation is not just for the business setting. We are constantly negotiating with our coworkers, spouse, and children. Getting To Yes offers a variety of interesting tactics for optimizing your negotiation skills.
Please note: This is not a paid advertisement. The book is a Bestseller, quick read, and highly educational!