Products and how (not) to offer them
Well: it might not be a news flash, but what you need first of all is a product. As trivial as it may seem: this is also the hardest part. I have offered 500+ products on my web pages, and yet only a hand full of them account for 90% of my sales.
So one lesson to be learned is: Try! If a product is not selling as you feel it should after a year: give it away as a promotional gift.