Resources for Designing a Course

One of the things I'd like to do while I'm still a doctoral student, and assume I will have to do after having been a doctoral student, is design a course, top to bottom. At this point my main guideline for doing so would be the syllabi of courses I've taken, and while those will be useful, any texts or previously published guidelines or advice would also doubtless be useful. Can anyone point me to resources they drew upon while trying to create a course? Bonus points if it's planning-specific, but I would think it wouldn't have to be.