How to examine an object/examination system?

I would like to implement an examination system on my project. I’m having a really hard time trying to figure out how and from where to start.
I wanted something like this: Easy Object Examine - Demo Showcase - YouTube
When I click with left mouse button on an object it would put it in front of the camera, and i would like to rotate it holding the left mouse button.
Can someone give me an insight?
Thanks

I am not overly au fait with unitys UI advances since as I have not used it in a while but the CanvasRenderer

Looks like it takes a mesh, would this work for your needs?

or see: