I'm no beginner but have a silly question:

How do I put an item back into inventory if it's on the screen and I don't want to use it?

I've clicked just about everything and can't see anything in the manual <img border="0" title="" alt="[Confused]" src="confused.gif" /> - Thanks!

I just finished Final Cut and as I recall, I just right click and the item returns to inventory. Right click again and the PDA will also disappear from the screen.

Enjoy the game.