As a Christmas gift I received a Polar Pro Switchblade 8, with 5x magnification lens. I've never used a macro lens before and know very little about it. It did not come with any instructions. The articles I've found online assume much more knowledge of photography than I have. So I have some naive questions. How close should I get to a subject to use the macro lens? Can I use it for video? Anything else that a newby needs to know without diving into much technical discussion?