Something new is often awkward, there is the sense of wanting to make an impression, perhaps not even good or bad just an impression.
I can’t say as I write this that I have very much more in my mind than replacing the introductory post provided by WordPress. However it is probably worth saying that I almost certainly would not have even begun to think about a blog like this one if Google Groups was not currently experiencing difficulties. The group I normally post to on GG is a Usenet group, and although I can post on Usenet, frankly it is slipping into the shadows of the internet and I suspect that posting there, is unlikely to reach as many readers in the long term as a blog.
So here I am, I don’t know how often I will post or about what, but I have a blog up and running.