Website help

Me and a friend are designing a website and need some help as we've never done it before. How easy is it to suss out? Is it worth looking at this kind of thing http://www.1and1.co.uk/domain-name-r...ion-management
We basically want to sell cards and stuff like that. Do we need a business name and if so how do we find one that's unique? Do we base our domain name on that or find a domain name and base the name on that?

It's good that you have a business plan as such but if you're not competent in the web development department then it'd probably be wise to get somebody on board who does.

Yeah, the more we look into it the more we realise we need a lot of help! Thanks :)