This document contains notes from Joaquim Marques on sales and marketing skills. It discusses strategy, tactics, commercial prospects, sales activity planning, communication rules for sales, sales interviews and negotiations, and how to lose a negotiation or sale. The key points are defining strategy as linking internal capabilities to environmental requirements, using tactics to fulfill strategy by detailing actions, and the five communication rules of asking questions, treating clients as humans, using common language, active listening, and ensuring feedback.