I get more steaks than roasts as well, since we are a small family of 3. I also get the ground beef in 1 lb packages. It is easier to double up than use a smaller portion of a larger package. Usually, if you tell them you are not sure what you want, they will go down a list with you and will explain something if you are unfamiliar with it. I get my roasts cut into smaller weights, and the steaks are cut 3/4 inch thick. I also get the short ribs (rather than grinding them up into ground beef. You might want to specify that you want the liver, heart, tongue, etc. Most people don't and they often assume you don't want them. And don't forget to ask for marrow and soup bones and the oxtail if you want it.

Another good source of info is a book called Good Meat. In it she explains all of the cuts and various ways to order them (and cook them).

I don't have specific cut advice, but I will say I've been disappointed with local butchers in the past giving me too many roasts, and not enough steaks. Since I work as a regular cubicle slave, I don't have enough time at night to deal with roasts (especially if they're not well-marked on the paper). So these days I always ask the butcher for more steaks than roasts (you could do the opposite, depending on your situation), and to clearly mark on the wrapper whether it's actually steaks or not.

Also, I make sure I get marrow bones for me and dog bones for the pupster.