This blog is now at http://tortui.com. I also upgraded from my Basic to a Premium WordPress account today. The cost was only $12 more per year! I’m still unable to install the Sydney theme though.
To change from https://tortui.wordpress.com to http://tortui.com I only had to edit DNS information on my Enom Domain Settings page by checking the Custom radio button instead of the Default button. That wiped out all of my Host Records and Email Settings. I added the three WordPress domain servers in the lines provided:
I then went to plans/my domains/Edit Domain/Edit DNS and found that my MX records were already added.
After changes were made. Now the domain is pointing at WordPress’s name servers: