If you just want some things to remember interval sounds try these...
minor 2nd = first 2 notes of the pink panther theme song
major 2nd = first chord of chopsticks
dimiished 4th = unpleasant sound, used for things like train whistles
perfect 4th = here comes the bride
perfect 5th = first two notes of the melody of the Star Wars theme song
You might have to find your own for the rest of them, the ones for minor/major 3rd I can't even remember the names of...as for what notes sound good tegether/general music theory, the music course should be very helpful, if you want some instruction in you own time you can try reading these articles...
http://www.ultimate-guitar.com/search.php?value=the+crusade&search_type=columns