Dragging and dropping videos/content

Hi all, I am new to unity and I am trying to develop a simple VR application with the following objective:
The user is sitting in a room with 4 walls around him, and the wall in front of him is a 'Screen'. On the rest of the walls, there are multiple objects such as videos, images, charts etc. User wants to pick up the video/image from the wall and drop it on the 'Screen' in front of him where it will play/open. How do I start going about this?