When creating content for your website, biographical details are a must, but don’t be tempted to go overboard. Your website may be your home in cyberspace, but it’s a marketing tool too.
Pictures of you with your family or pets certainly present a good, wholesome image, but don’t overdo it. Photographs from your professional life are far more beneficial. If you have a picture of you shaking hands with a celebrity at a black tie function, by all means put it on the site. If you have photographs taken at your presentations and workshops in schools or libraries, use those pictures as well.
Try to display the cover art of all your books and show people where they are available and the price. This applies not just to your home country, but other countries too, if your books are distributed elsewhere.
My own site connects directly to each novel’s pages at Amazon worldwide, as shown in this example. I also post links to the professional organizations I belong to, plus the major online bookstores, my publisher, arts organizations and so on. There are pages devoted to the historical background behind four of my books, such as this one, with all these pages containing links to websites with a wealth of information for my readers.