A few noob questions..

One; Is there some way I can see how much memory I have left on my PS3? Or at least how much I've used?

Two; My PS3 has two USB ports on the front, and I currently have two wireless controllers. If I bought another controller would I be able to use it, wireless or wired?

1. under system settings then go under system info i think not 100% but its in there somewhere

2. yea you can have up to like 7 controllers on a ps3 all wireless but you can only charge 2 at a time if they are dead

Thank you.