craftgrrl | Yikes. bathbysamia.com

I am now the semi-proud owner of bathbysamia.com (dont bother looking, theres nothing there yet), much to the urging of a friend (those pesky business majors!)
I make soap.
I know nothing about selling that soap online.
This is where you guys come in:

Do any of you sell your homemade products online? If so, can you post your site url here? (not looking to gank layout designs, or anything like that. Just curious about what info is KEY to online retail)
How much, if any, profit do you make?
How do you handle orders and payment?
How do you go about shipping?
How time consuming is it? (actual sale and process time. not time involved in making the product)
Do you advertise? where?
Any key info?

I am desperately in need of advice. Yikes. help!