Course Content Expand All | Collapse All Lessons Status 1 Day 1 - Introduction, InterNACHI, Roof & Chimney Introduction InterNACHI Roof & Chimney 2 Day 2 - Roof Structure & Attic, Electrical System, Plumbing System, Academy Website, ISN Roof Structure & Attic Electrical System Plumbing System, Academy Website, ISN 3 Day 3 - Cooling System, Heating System, Interior Rooms, Exterior Cooling System Heating System Interior Rooms Exterior 4 Day 4 - ROI, Naming Your Business, Phone Systems, Accounting, 48-Point Referral Marketing Campaign, Sphere of Influence ROI Naming Your Business Phone Systems, Accounting 48-Point Referral Marketing Campaign, Sphere of Influence