I am blogger impaired

I've worked in an IT field for 12 years, but I've never had anything to do with Blogging and have no understanding of it at all. I am lost most days trying to post on other people's blogs, confused over all the log in accounts (why can't I just use my beloved hotmail.com account?) and have no idea what I'm doing when it comes to blogs.
So, I admit - I am Blogger Impaired. But I would like to try and setup a blog so I can communicate with others and add posts to their pages, which at the moment is so hit and miss i usually give up in the sea of log in accounts and errors.