Take a class. I'd recommend, "https://www.margielawson.com/crazy-easy-awesome-author-websites/ by Lisa Norman. She'll help you start with a theme you find attractive, and then customize it. I went this route because I wanted to know enough to post my own material and maintain/modify as my writing expands. I'm still learning, but I have Lisa as a resource. The cost of this one-month, interactive class is $120. A bargain.