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It's easy to make a blog post. Just go to the top right hand corner of the home any page where it says "Add" and choose "Blog Post". The great thing is that you can add attachments, links and images to the post with the insert button. There are also a lot of great macros to choose from if you have something specific in mind you might be able to find one. But, most importantly, you should add the labels at the bottom under "Labels:". This is an important step in order for the site to be self-organizing and for information to be readily accessible to others. You can add pages as well, but this might take some organization. Pages and blogs seem to me to be identical in the way they are created, so the same things apply if you want to make a page.
Thanks for sharing your expertise with the group!