I am very scientific myself and don't believe most of it, but if you hold your hand about 10/20 cm above a clean white sheet, and seriously focus with your eyes on a dot you made on the sheet.
If you don't blink and keep focused you can see a thin layer of light around your fingers. I didn't believe this at first myself but everyone can do this!
So please go on and try. You can practice with whatever object you want. Look past an object and focus on the background and then with your peripheral sight you can see it.
I've never talked to anyone about seeing auras because they all think it's way too spiritual(which is not if you ask me there should be a logical explanation for it only we haven't found it yet), but I really doubt if I should believe that the layer of light really is the electromagnetic energy floating around every person and object.
Also I seriously doubt that the more you practice, you're gonna see more 'layers' of the aura.
Is there anyone who actually KNOWS something about this?