Getting started guides, user guides, and downloads for Home Design (FloorPlan / Punch! Home & Landscape Design / Architect 3D family products) — available for both Windows and Mac, in English, German, and French.
Pick your platform, then your language.
Not sure which edition you have? Check Help → About inside the application.
Step-by-step, with screenshots for every tool — for Windows. (Mac users: see the Mac guide’s own Getting Started section, linked below.)