What are the four main components of a prospect pool? What information is available to salespeople about each component?

The four main sources for a prospect pool are leads, referrals, orphaned customers, and current customers. Leads are people and organizations you know nothing or very little about. Referrals are people or organizations that you know very little about other than what you learned from the referral. All you really know about orphaned customers is provided by company records. You should know everything necessary about your customers.