Hi Emmanuel
I am in the same position, I'm waiting for my password, etc to download the assignment. I find that reading the RHE book and generally reading up on rmi, networking and threading issues has helped me gain a valuable insight.
Untill I actually get the assignment I can't tell u how helpful the actually are.
Good luck, I'm sure u will find load of help in this forum.
Onyedima Azu
London