How do I use the scrolls for a play station 3? I am really having a hard time.

Equip the scroll to one of your hands then when ready use it exactly like a spell. R1 or L1 Hold and release. Only difference in a scroll and a spell is a scroll is a bit more powerful and only one use...I think. I don't use them much, I prefer to just use a spell.

You 'equip' the scroll and it appears in your hands just like any other spell in the game, you cast it, and the magic disappears from your hands.
I'm on PS3 as well.

Also, some scrolls need you to press R1 button down longer than others.

Thank you very much for your feedback, it is very much appreciated!