How should I organize my leads?

Track seven things for every lead: their info, the date you received them, every contact attempt, every response, appointments set, notes on what they said, and, most important, the next follow-up date. That last one is where fortunes hide, because a lead without a scheduled next touch is a lead quietly dying. Use a CRM, a spreadsheet, or a notebook. The tool is not the point. The habit is. Organized average marketers outproduce disorganized talented ones every single month.