Where to Post Excerpts of Not Yet Published Works?

I have an Amazon author site for my published books, which is great. I also have a blog with Blogger, a Facebook page and have an account in Google Books/E-ditions. I haven't set up my own website yet for a number of reasons. My agent is currently trying to sell my third novel. Meantime, I'm halfway through writing my fourth.

My question is this: I'd like to make available excerpts of book #3 as well as of my WIP in a way so that readers of my blog, Amazon site and Facebook page could have a glimpse of upcoming works, to whet their appetites, if you will. Does anyone have any suggestions of possibilities in absence of a personal webpage? There's really no convenient space to do so on Blogger or on Amazon.

Michelle:

Thanks. I'll check those out. I failed to mention earlier that I'm digitally challenged, so I'm first to admit ignorance in this area, and that my query may sound like a dumb question.