Youtube has some episodes up.

There are about fifty-two total Iron Man episodes. Strictly, there are no specific types or categories; types are a matter of opinion and cannot be stated as fact.

No a second series has been commissioned for sometime in 2011, with another 26 episodes.

Yes there is a list of Prison Break episodes in Wikipedia.

You can watch Iron Man: Armored Adventures on Nick Toon Network. There's usually two episodes on every day. Except on weekends the number shown varies. I hope this helps you!