Q: Would I be able to put wheels on the bottom?
A: Yes. You would probably need to use glue or short screws to secure the wheels.
Q: Is it easy to assemble?
A: Yes. The desk is extremely easy to assemble and require no tools as is comes pre-assembled with everything you need to start using it.
Q: Does the fan have an on and off switch?
A: No. It turns on when you plug it into your computer or laptop via USB.