Okay,
This is easy:
Click on “login” on the righthand side of your screen.
You’ll get an editing box where you can write your message. Click on a category to the right (Academic, Politics, etc.)
Click publish, and you’re in like Flynn.
To make sharing links MUCH easier, under the editing box (mentioned above) read about “Word Press Bookmarklet”. Drag the link to your browser bookmarks, and when you’re on a page you want to share, click it, and a mini blogging window will open, allowing you to post to the blog in seconds. (If this is confusing, I can show you when I see you–it makes life easy, trust me.)
Kate