Hi Galaxy Sue and welcome! Hope you find the site useful once you get going with it.
You're off to a good start -- you've registered and set up your profile so you're in! After that, just have a browse around and either make a post of your own in your blog, or leave some comments on other people's (just exactly as you've done). There isn't a 'members blog' as such for you to join (the whole site is like a giant members blog! :).
Did you find the Help page? Have a look there if you haven't, it has a simple user guide that you can download, with tips on finding your way around. If you just want to see what every one is posting, then go to the All Posts page. You can scroll down and click through the different pages at the bottom.
Hope that helps -- the site works a bit like Facebook if you've ever used that. If you want to chat more, then I'd be really happy to talk to you by phone if you'd like. Just call me in the office ( 03 9805 2582) or let me know when you're free and I can call you.