Affiliate Marketing Secrets

I’d be interested in buying and selling shares during my summer break in order to make some extra cash when i’m not working, perhaps start doing it to earn serious cash in the future. My very crude and basic view of how it works is that a buyer buys shares for a certain amount, waits for them to rise in value, and then sells them, cashing in on his efforts. It seems pretty simple from this and easy to do, but if it were everybody would be doing it.
Questions i have relating to this are: How does the buyer earn money, who pays him or her? And what is a portfolio?
Thanks, i tried reading about it online but found it a little complex. I figured talking to real people would help.

I’ve tried White Citris (good, but smells like lemon water and is a little too strong), Carried Away (good at first but has a sort of buttery undertone-bleugh) and fall smells like Secret Wonderland (gorgeous, but I’m sort of sick of it and want a fun, fresh smell) and winter stuff like Twilight Woods (too mom-ish).
I want something that screams summer. Something that has coconut, and smells like the beach, and just really fresh, fun, and flirty, but not sickening or like a cheap perfume (ie Bombshell by Victoria’s Secret).
10 points plus I’ll answer your question. Thanks!!!

I have Moonlight Magic body lotion and spray and the other day I couldn’t find it in the store. I think they must have discontinued it. However, I smelled the “new” scent, Secret Wonderland, and it smells exactly the same. I think they are marketing it under a different name now.

I have Moonlight Magic body lotion and spray and the other day I couldn’t find it in the store. I think they must have discontinued it. However, I smelled the “new” scent, Secret Wonderland, and it smells exactly the same. I think they are marketing it under a different name now.

What are the secrets?

If one of my parents works at the university or affiliated institution how dos that alter my chances of being accepted?
Thanks in advance!