Thanks for the suggestions. steemd.com would be good to add. @bitcoiner has already been working on the page, but I'll see if it can be added. As far as the "what can and can't be changed once the blog is posted" part - there are a lot of things that the user will need to learn. It is a good tip, but probably a little bit too much information for right when the user is getting started. Hopefully this type of stuff will get covered by the FAQ and SteemPrentice mentors once they get a little more acclimated to the site.