Had a question pop up while I was working on a blog setup. I've very obviously never been published, but I'm hoping to change that one of these days. I'm building a blog site that is related to a planned novel and possible series. I planned for the blog to contain small short stories and background that related to the world and characters that I've come up with. If I take small excerpts from the novel, but rework them, will this interfere with any publishing matters?

I'm not a novice to writing, but I am absolutely raw when it comes to the world of publishing, so I didn't want to put anything on the planned blog that might interfere with my works being published in some form. I hadn't thought of it until someone mentioned putting an anthology story on their blog.

Thoughts on this? Suggestions?