Affiliate Marketing Secrets

I was looking at my summary and have quite a few products ordered under all items ordered. Do i get a commission for this or just items purchased through links?
Thank You!

Hi all
I have to create a plan for overall online paid marketing for a website, but as i am new to this, i am getting confused. what all criteria should i follow for a successful paid marketing. plz share ur valuable knowledge for ppc/ adsense/ solo ads/ etc
thanx in advance!!

I want to start a new site and would like to know what earns best when using adsense.
Maybe Iphone covers, electronic gadgets, biblical stuff? Anyone knows?
Also, not just the best paid, but also with a decent volume of advertisers.
Thanks!