The Download Now link will direct you to a form on the developer's site that you must fill out before download.

From Autodesk: Autodesk 3ds Max software allows you to create high-resolution 3D assets for games, film, and motion graphics projects.

Customize, collaborate, and create 3D content quickly with 3ds Max 3D modeling, animation, and rendering software. It's packed with brand-new, user-requested features and enhancements for entertainment and design professionals.

What do you need to know about free software?