What is a PSP console?

I want to buy a PSP 3000 console and I want to know what items come with it when I buy it. Please tell me if I need to buy a battery charger for it or can I use the AC adapter for it? Does an AC adapter come with it when you buy the console? Also if I want to play it on a standard tv what cables do I need for it to connect it? I heard that you can also play UMD movies on it where do you get these and what do they look like and how much do they cost in Australia?