Create a business website

I want to create a website for a potential business. I have registered a domain name. I'd like the website to have a few email addresses. I would have these all forwarded to a seperate email address which would be managed by myself or another person. The website is an experiment to share ideas, promote potential software applications and be used for market research. I'd like to be able to add subpages easily for products, ideas, blogging, and so on. I'd also like to build a customer database from the viewers and emails. I also want to it tie into facebook, linkedin, and twitter