Blogging systems such as Google's Blogger make it simple for you to post a Profile page, where you can enter a photograph, short biography, and additional contact information. If you think your photo will not damage your book sales, you should include it on your blog. Your readers will feel a firmer connection if they can see your photo.
With the right details added, profiles can serve as a makeshift "press room" until you have one ready. Authors who already have books on the market sometimes use their Amazon profile as the profile for their personal blogs.