GotH, here on A.T. is a really great scryer--I hope she sees this thread, perhaps I'll send her a PM.
You can scry with anything--but things with a pattern in it of some sort seem to be the easiest to scry with. Such as your floor--if you have a tile floor with any type of pattern in it. Or the ceiling tiles, if they are the same way, (with a pattern). You can also use a candle that is lit, (I think Padma does this? though I could be mistaken and have her mixed up with someone else). You can honestly scry with ANYTHING. Even if you have a crystal to look at--not necessarily a crystal ball and even the back of your eyeballs, as some people like to say. meaning, just close your eyes and scry!
The way to go about it is to quiet your mind and still yourself and just pay attention to what comes to you. Generally, if looking at an object, such as a crystal ball, crystal, floor pattern, etc. you will begin to see something take shape. Make note of it in your mind and continue on to see if you get more.
After you are done, just review all you got and see if it makes sense. You can and I always advise people just starting out to use a dream book to help you decipher the meanings of anything you get.
Don't scry if you are tired--it only brings on a headache. Don't force it--again headache material. and, IF you begin to get a headache while scrying--stop immediately & rest and leave the scrying to another day. Scrying w/a headache can make you get a REALLY BAD HEADACHE--migraine type material.
Scrying is something that can happen immediately--or it can come to you after you've tried 3, 4, 5x or maybe not till you've tried 30 times. So, if it doesn't pay off right away, don't panic and give up--keep at it. Its like mediation in a lot of ways. Sometimes you have to keep at it to see any results.
Good Luck!