debussy's toccata

[dongsang153]

i'm almost done learning the notes of this piece.  i just have trouble memorizing measures182-193 and messure 244-248.  is there an easier and more efficient way to memorize this?  oh, and if anybody has the gradings to all of debussy's piano works, that would be great.  i just want to know where i stand, and what piece of debussy's would be good for me to play next.  thanks!!