I've been working a day job since October, but through the power of caffeinated green tea and goji berries I found the energy to code up blogs. 
To create your own blog click "Post Blog" in the upper right hand corner. If I did a good job it should all be pretty intuitive. If not email me, or comment here, with issues, bugs, concerns, and I'll be happy to address them.
You should be able to add images, html, links to youtube clips etc.. pretty much anything you stuff into the post form.
You can edit/delete comments, modify posts, etc... There is a little 'thumbs up' image next to the word 'kudos'. When you click it you give a blog post a vote for the good vibes you got from it. My favorite button is "Edit my post", because I have to click it at least thirty times to correct all my typos.