I reserved a domain name now what do I do next?

I would like to create a web site to use as my own online gallery as well as allowing others to purchase my work.

I have seen many impressive sites that members here have and would love any advice you can share.

I don’t have a clue how to begin. Do you use a service to create your site for you, or do you use software or an online service to create it yourself?

When I registered my domain name at Go Daddy.com I also purchased their economy web hosting with 5 gb of storage. Is this enough or do I need more?

As you can see I am quite clueless here, any advice would be greatly appreciated.