[PSP] PSP Discussion. Hay guys I just got one for Crisis Core, can u help me how 2 hax pls?

So, one of my New Year resolutions was to update myself. I have been so out of the world I used to inhabit that I decided that I was going to try to show at least some interest in things I claim to be interested in. Like gaming, for example.

Anyway, my PSP sits around and collects dust. I am basically an old man about it. I play games on it. I go out and buy games on discs. But then I finally noticed that I have a memory stick for it and there are little sections for "music" and whatever on the screen.

So, while I'm playing Secret of Mana on my old zSNES emulator on my old computer, it dawns on me that some people probably play emulated games or something on the PSP.

I went to a few sites, and mostly it's either babble I still don't understand (what the HELL is MAME?) or the usual, obnoxious, "Don't ask for ROMs! They are illegal! If you need help with an emulator, go to our forums!" stuff. So, I decide, for now, since it's illegal and all, I'd rather get to know my legal options.

Clearly, the PSP was intended to play other forms of media than PSP games because Sony built in little sections for it. So I generally have some questions.

1. How do I put media files on my PSP? I don't necessarily need a technical guide, but what, is there an uploader thing I'm supposed to know about?
2. What legal restrictions has Sony set up? I imagine I can't pirate all sorts of movies and games. Do they have specific file types?
3. What is it actually possible to do with it? Just generally. I have no idea what I'm doing, here.

I'm twenty-one and I have relegated myself to playing games that were popular when I was seven on ancient emulators. I don't have an XBox 360 Live Account or whatever. I just recently heard that people can mod their original XBox consoles to play PS1 games.

Help me out, here. I'm an old man.

Jam it back in, in the dark.