What is the best way to create a website for internet business?
I’m thinking about selling an ebook on the internet.
You need a little bit more than just HTML…
And the way you ask the question makes me think that you do not have much experience. My advice: hire a proper coder.
Your "site" will need a few things, such as extracts of your book to view, a download facility (for the client to get or read the book), and a payment system (most likely PayPal). In short, a very small e-commerce with one product and payment gateway.
A good programmer could do that in a few days.
Place your request to www.rentacoder.com, or www.getafreelancer.com, or google "web freelancers". There are many around.