This document discusses the importance and process of qualifying sales leads. It defines qualifying as filtering suspects based on predefined criteria to determine if they are prospects or not. Examples are provided of asking probing questions to gather information and match suspects against qualifying criteria in order to push them into the prospect category. Key aspects of qualifying criteria are identified as verifying specific needs, budget, and timeline. The document also outlines a sample sales cycle and conversion from suspects to prospects to later stages over time through qualifying questions.