WordPress seems to automatically default to double spaces between the lines of text. Is there a way to make it single spaced?
Answer: If you hit return when editing text word press will put in a double space - in the html it creates a paragraph tag. If you need a new line but you don't want a paragraph break hold down the shift key and hit return. This will create a line break instead.
Answer: To get rid of the comments at the bottom of a page, edit the page and look for the discussion block to turn off comments. If you don't see the discussion block go to your screen options (upper right) and enable the discussion block. Now you should see the block and can un-check the ability for people to comment.
What happens to my blog when I graduate?
Once you graduate your blog will be deleted 60 days from the date that your login has been disabled. See Exporting Your Blog for instructions on how to save the content of your blog and move it to another worpress installation.