Potential pitfalls: Download size (~4GB), needing a stable internet connection. Also, legal aspects—make sure they're not pirating. Stress that they should only download if they have a legitimate license.

Alternative uses: Maybe they're using virtual machines (VPC or VMWare), which could be a safer environment. Mention that as a possible use case.

Additional info: Mention that ptBR is a specific language. If their system is in another language, they might need to change regional settings. Also, compatibility with 64-bit systems, checking via System Info.

Creating a bootable USB or DVD. I need to mention tools like Rufus or Windows USB/DVD Download Tool. But since Windows 7 is older, Rufus is better. Provide steps for both USB and DVD. Also, note boot modes (Legacy vs UEFI) to avoid confusion.

Wait, the user might not know how to check if their system is 64-bit. Should I include that too? Yes, because trying to install 64-bit on a 32-bit CPU won't work. So, adding a step to verify the system type.

Instructions for downloading from MSDN/TechNet: They need an account. Let me outline the steps. Also, if they don't have subscription access, maybe mention other options like purchasing media, but that's not common anymore.