While a website will not, on its own, drive much traffic for an author, most established authors have a site dedicated to their published books, and establishing the basics of their story. If a potential reader is searching for information about a particular author, it is good for them to have somewhere to go. Independent authors will typically only have a small (or no) budget) for such an undertaking, Fortunately, there are some excellent website building services that do not require their users to code or even know much about the technical side of things. So keep it simple to begin with, maybe even just a single page with links to your Amazon and other listings.