Buy a domain.
Choose a host that offers tons of goodies.
I am with www.canadianhosting.com, it's cheap, you get good space, tons of bandwith AND they include a merchant program for free so you can sell stuff. It's fully customizable too.

Learning to make websites is fun and easy.
Buy a book!
Have fun!

You can always just set up a business Paypal account and add a link from your website. When someone wants to buy, the link will just re-direct them to your paypal payment site. It's pretty self explanatory once you get on there on how to set up payment for a particular item you can customize the form to suit. Anyone I'm waffling it wil lmake sense when you go on it! You can look at my website to see how I got around ths issue www.rubyslipper-online.com Good luck!

Try your local big retailer, most of the places offer business plan which includes domain name, host, paypal and shopping cart plus all those blog creator…ext in one package. I always suggest my client use Costco’s plan (I don’t work for Costco) because they are likely to have membership already and the deal Costco gives is better than directly dealing with any host I know. It also gives you templates for your web if you are looking for a very simple and stander one, the instruction in there is fool-proved. For a very basic package which includes everything small business needs and starting an online business is around $90.00 CND a year this includes your domain name and registration fee. The best thing about it is they also provide you the opportunity to net working/advertising with other online business.