Hi Dizzybliss,
I think you can scry in any reflective surface so I don't see why a pyramid would be a problem. I've known people who use quartz points for scrying but I like to use something black; either a black scrying mirror, a black bowl with water in it or my rainbow obsidian sphere.
I just gaze into it and go into a type of trance. I see images sort of floating above the water, mirror or sphere. At first it looked like clouds, smoke or maybe even ectoplasm but with practice it started to make shapes. I think everyone is different though, some people see images in their mind, others actually in the crystal, mirror or bowl and others (like me) see images floating on top of whatever it is they're using to scry with.
If you do a google search you'll find loads of information on the net.
Here are a couple of sites I found just now (not sure how good they are):
http://www.mystic-mouse.co.uk/Wisdom_Texts/Scrying.htm
http://hermetic.com/browe-archive/ashort.htm
If you do a search on this site you'll also find loads of threads about scrying. Look in the Divination forum.