Marketing

Let’s Get Real or Let’s Not Play: Transforming the Buyer/Seller Relationship by Mahan Khalsa

Negotiation

Negotiate Anything Podcast

Never Split the Difference: Negotiating As If Your Life Depended On It by Chris Voss

Presenting

The Quick and Easy Way to Effective Speaking by Dale Carnegie

slide:ology: The Art and Science of Creating Great Presentations by Nancy Duarte