Blogging your book is an excellent way to increase your readership and sales before you publish and after.
The first thing you need to do is to determine if you are going to self-publish your book, or have it published by traditional book publisher. If your book is already published read the appropriate section below.
If you have self-published your book, or you know that is the route you are going to take, than you can write your blog content freely. Self-published books can contain all the content on a blog, so you have more options open for you in your blog posts.
If on the other hand your book is published by a traditional publisher or will be, you have to be more careful in how your write your blog posts. A good rule of thumb is to keep at least 20% of your book content off of your blog. Publisher's don't like to publish blogs into books if all the information is already published in a blog.
Blogging a Book Basics
In order to garner an audience for your blog that can turn into more readers for your book you will want to organize a list of the different topics that your book covers. Look for topics that would be of particular interest to people that would love to read your book.
Some historical fiction novelists use their blogs to delve deeply into the time period that their novel is set in. This gives readers of the blog something to learn from and enjoy and adds more depth to the subject matter for their book readers as well.
Your focus for the blog should be to entertain while you teach and explore subjects and topics that are of interest to people today. Relax and have fun with this. The more you enjoy your research and writing the larger your blog audience will become, and the more additional sales you will gain for your book.
Blogging a Published Book vs an Unpublished Book.
When blogging a published book, keep your blogging topics close to your book content. Engage your blog readership by asking questions that will elicit their experiences with your book.
When blogging an unpublished book you have more room to experiment. Some authors like to blog a small section of their upcoming book and then ask their readers to give them their feedback. This can help you to mold your book to your target audience.
Some authors have found that giving their blog readers a taste of the different content or topics in their books that it helps them to write more of what the readers want to read, and eliminate any topics that are not popular on their blogs.
As a final note, I would like to add that on your blog you should always write in an interesting, conversational style. Make your readers feel like they are important to you and your work. Remember to have sections on your blog about aspects of your life that you want to share, and then use those blog posts in your social media to help your readership get to know you.