Marketing Myself Harder Than Helping Others

I picked a bad day to start my new routine - it's only 6:50 and I'm already behind. My husband got off for his long, 6 hour commute to work at midnight and I had a really hard time falling asleep afterward.
This is especially bad since I'm behind in an online photo class and starting a new marketing class today (as a student).
And it didn't help that the first question in that class had me stumped.
What are the basic principles of marketing?
I'll let you know when I reach deep into the cracks of my mind and take myself back to business school.
A nice long walk along the country road usually helps me focus and the dogs await.
I'll let you know the answer on Friday.