Tiels are such sweet birds. I know you'll enjoy 'em!

Well, the minimum size of a cage is 24" by 24" by 24” but I recommend you get a larger one. PLEASE make sure the bar spacing is not farther than 3/4". They can get their head stuck between the bars I actualy wouldn't recommend a cage like Flamepony12 has. When you have a cockatiel you should stay away from dome shaped cages. You would need a carrier cage, but the carrier cage can just be a frog terrarium or something along those lines. I would also keep a small night light on near the cage to prevent night fright.

Most perches are good, but stay away from the "pedicure perches" they are very hard on the cockatiels feet.

As soon as you get your cockatiel, introduce it to fruits and vedgies. It is very hard to get them to eat food they are not used to. They love carrots tops, and dandelions. Chicken, egg, and tofu is also a favorite of mine.

My cockatiels have turned a blind eye to their toys, but I've heard that they like bells, shiny beads, and leather strips.

Males are typically more vocal, most chirp, sing and occasionaly say a few words. I know that males are usally more independent as well.

There is so much more information, so please ask questions!