Hi and welcome to the forum,
This stuff doesnt cost a lot and will keep you busy for weeks:
Home Depot: Master Lock No3. blue plastic bumper/metal laminate plates padlock
Home Depot: Defiant deadbolt
WalMart: Brinks deadbolt
Walmart: Brinks brass padlock
Ace Hardware Master Lock No.532 or No.576 Padlock
if you can find one, an ABUS 55/50 padlock that has security spool pins in every chamber!
not big on stores, but you like shopping on the internet? ebay has tons of new and used locks for great prices. look up padlocks, deadbolt, mortise cylinder, rim cylinder, and other related terms. Note that most dollar store locks that just say 40mm or Made in China on the bottom, are either not well made and have very loose parts, or you'll find that they have 5 mushroom security pins in them and picking as a beginner will be a painful nightmare.
digital_blue has a great exercise that teaches you to build up your skill by taking a deadbolt or rim or mortise cylinder apart and taking out all the pins, then installing 1 pin stack, then 2 pin stacks and so on, and picking them to build up your skill level. If you get a double sided deadbolt, you can take apart one side, and pin it up how every many pins you want, and leave the other side of the deadbolt untouched so you can pick all 5 pins any time you want.
Here's db's post: viewtopic.php?f=3&t=10677
Read the locksport guide as well, it explains things and has visuals as well:http://locksport.com/index.php/discover ... l-i-guide/
What are all these spool pins I keep mentioning? check this out: http://www.youtube.com/watch?v=T4hoGY3SAtU
Good luck and have fun,
ps. Wa1ker00 types too fast, he beat me to the punch