Some will not agre with me but I was new to the web once. Ishkey is rite slow down and read every thing you can find then ask for help with what you dont understand.
I use hostgator
http://www.hostgator.com/
8 bucks a month and freedom to do what I want .
also check out
http://www.zen-cart.com/ It is a open source shopping cart with lots of free ad ons and a forum that will answer almost any question you come up with about using it Plus it is free