Hi Autumn,
Please never feel like you're a dufus when asking an astrology question. It's a very complex topic and no question is stupid. We're here to provide assistance and help in any way we can AND we were all novices' (and just as confused) once!
When I taught, I used pre-printed astrology chart blank wheels with the 12 houses evenly divided and had the students draw their own chart...then I got the question about the even/uneven houses. HELLOOOOO! I then woke up to the fact that I should have told the class!! Luckily, it was my first year of teaching, so I learned quickly.
In addition to what Minderwiz said about the 1st and 7th intercepted houses, when I see an interception, I use both rulers for those houses.
I'm drawing a blank at the moment as to which book covers interceptions...I'll have to get back to you on that...
Warm wishes,
AG