Undecided Question

High school beauty advice: Part 2 Makeup?

I'm 16 years old and I'm going into my Junior year.

I really need some beauty advice. I have golden blonde hair & bright green eyes.

First, I have NO fashion sense or anything. My friend was the one that helped me pick out my current clothes and hair style. The reason I'm asking on here is because she has moved away.

I have green eyes that I would really love to play up. But I have no idea how to. I have fairish skin and golden blonde hair.

I went online to covergirl0o0com and it told me a few things to buy but I would really like more help. I want to look pretty, not trashy.
I have horrible under-eye bags that I would love to get rid of or cover up.
I have a few pimples on the center of my forehead.
I also have TONS of blackheads on my nose that I can't get rid of.
What do you suggest I buy? I want to look natural but pretty. Remember all the stuff must come from Wal-Mart.