Blogging can be a great way to get enough material to turn into a book. I have seen people stitch short stories into a book, poetry, anecdotes about life, webcomics of course, and several other topics. The excellent blog and website “The Art of Manliness” has spun off into several books, all of which are truly excellent reading.
I’ve done this too. In fact, my novel “The Dice of Fate” was largely published on a blog, in its rough draft form, before I polished it and made it into a full length novel. The short format of the blog was accessible enough that I wasn’t daunted by the writing, and I found that I’d written the whole story, in little chunks, in just over a month. It took a couple of months to polish and much editing, of course, but it can be done.
Your blog will give you the most bookworthy material if it’s all centered around a theme. For instance, if I were going to turn this blog into a book, I might pick two or three of my categories. For instance, I might pick “life,” “life and love,” “life hacks,” and “randomness” if I were making a book about my thoughts and observations.
I might pick “art,” “art tips,” “writing,” and “publishing” if I were making a book about art and improving your work.
Making your blog entries into a book doesn’t mean you have to leave them as they are, either. You can go back and edit them, restate things in a better way, expand on points, and more. It can be a lot of fun seeing how you’ve grown, and giving your original thoughts the advantage of your increased knowledge and perspective!
Then, when you have everything polished, you can self publish as well as make your work available as an ebook. This kind of book is a natural for that.
Don’t forget to have someone else (or several someones) read your new book to make sure it’s interesting, topical, and flows well.