Google Password?

So, I pop over to the blogger dashboard (where you update your own blog) and there's this huge message about converting my blog. Very excited sounding about all its cool features.

Then, it says: "Once you convert your blog, you'll need to sign in with your Google password."

Hmm. I wasn't aware that I had a Google password. I've resisted adding yet one more user name and password to the growing pile. So, I'm wondering if I convert my blog as they suggest, will I ever be able to get to it again?

I'm holding off on that conversion thing until I have more time to study the church.