Dear Rookie,
I attended class for first and second paper than the institute
went on bankrrupt(I loose $2500!), so i have to prepare rest of all
at home as I was not able to invest more money on classes! Instead
I brought Computer and jason's book to practice at home.

I found performance Tuning was most difficult one.
Backup & Recovery and Intro to pl/sql have same difficulty level.

HTH,