Fuel is a quality track. You have to be a keen Metallica fan tho to like ONE, but it is a classic and a real quality song - to understand it fully you need to see the video to it, and also read the book "Johnny Got His Gun"
Check out THROUGH THE NEVER, OF WOLF AND MAN, AIN'T MY BITCH, SAD BUT TRUE aswell. See how you get on with that before going onto the heavier stuff from "Ride the Lightening" and "Master Of Puppets" - don't mean to sound funny, I just don't know how heavy or fast you like your metal

"And Justice For All" is a killer record. The title track, and BLACKEND are espeically great. DYER'S EVE is a complete monster
As for IRON MAIDEN - Any of it with Bruce Dickinson is cool! I was never a fan of Paul DiAnno and hated the Blaze Bailey stuff. FEAR OF THE DARK, POWERSLAVE, NO PRAYER FOR THE DYING, SEVENTH SON OF A SEVENTH SON are all superb!!!
But I repeat :
CHECK OUT DREAM THEATER!!!!!!!!! The albums IMAGES AND WORDS and AWAKE are probably best to start with - if you have any questions about Dream Theater, hit up Petrucci with a PM - he is THE man in the know about them! Give you a guess where his user name is from