Just got a psp, got a few questions...

[razor-]

Hey,
I just got a psp phat and i got a few questions,

1When im browsing the net and i press select it goes to the psp homescreen thing where i can choos to play music movies etc.. the question is when i do that is there a way i can play a song then go back to the browser? because as soon as i press any button it exits the browser fromn what i can tell,

2Can i play music stored on the psp WHILE im in the browser?

3 Is there a way to go on you tube and watch videos yet?

4 Is there a way to go onto yahoo questions and stuff yet because usually it says your about to go from an encrypted page to unencrypted blah bah blah i click continue then it just reloads the same page,

5
Is it possible to creat folders inside folders on th memory card?

EG. In music on the memory card i create a folder called rap and a folder called country and sort the music into the 2 folders then when i go into music on the psp i choose if i wnt rap or country.

6
Is there a way to store the cache on a memory stick?

All i can think of ATM,
Thanks