I'm no razz specialist by any means but I might be able to provide a bit more info. Basically, you want to make the best low hand possible and as Woodyspoker mentioned, A-2-3-4-5 (AKA "the wheel") is the best hand. If you already play 7 card stud, then razz should be easier to understand.
After the first three cards are dealt, the person with the highest up card (K is the worst card to have) has to make the first bet and the betting goes around. In the case where more than one person has the highest card (e.g., 2 people who have K as their up card), then the person closest to the dealer's left needs to act first. Then after the betting is over, 4th street is dealt, but beginning with the player with the lowest up card. Subsequent streets are dealt in a similar way but starting with 5th street, the bets increase to the high limit (so if you're playing $1-$2 razz, the minimum bet increases to $2). Both 5th and 6th street are dealt up and then 7th street is dealt down.
Anyways, here are the top 10 hands and I think you'll start to get the pattern
1) A-2-3-4-5
2) 6-4-3-2-A
3) 6-5-3-2-A
4) 6-5-4-2-A
5) 6-5-4-3-2
6) 7-4-3-2-A
7) 7-5-3-2-A
8) 7-5-4-2-A
9) 7-5-4-2-A
10) 7-5-4-3-A
Phil Hellmuth's Play Poker Like the Pros might be a good source to get the basics and he has a more comprehensive chart too.
OP, if you can provide us a more detailed question, we might be able to provide more specific answers. Hope this helps you somewhat.