Lillie, I don't blog yet but I plan to at some point. Don't ever feel that no one would be interested in what you have to say. You have been writing some interesting posts here on the forum and I have been following them.
I notice that a lot of bloggers will re-post articles from other blog sites.
Some will write about the newest resource out there. As long as it is something of value and you can always get that from the Internet. It is a well that doesn't seem to run dry! But I know what you mean, I think everyone feels like that until they get up and running. You will do great. But there is plenty of help out there too if you feel you want to bone up first. Some are: copyblogger, prologger to name a few. Just Google "I want to learn how to blog" or something to that effect and you will get a lot of links. HTH
Jo-Carole