No problem.
Given your second post, it's even easier.
You can turn on the Browse button [upper right corner of itunes, looks like an eye] and that should give you three new columns, Genre, Artist, Album, that act as filters, moving from left to right. You can drag the panes vertically so they're taller and you can see more things in each one. So if you're in the mood for Rock, click the Rock genre; in my case, that drops artist count from 238 to 56; then I can scroll in the Artist column, and say "Oh, I'm in the mood to listen to King Missle'; click that in the Artist column, then only King Missile albums are shown on the Album pane.
Or just leave Genre selected as "all" to view every artist.
Try the Browse button, if you haven't already.
On the ipod, of course, just go Music -> Artists and scroll up and down till something jumps out at you.