I'm not familiar with Blogspot (I use Wordpress), and I don't have time to work on someone else's site. But if you want to learn basic HTML it's worthwhile and really not all that difficult, just time consuming. (If you need to use css stylesheets & php, things get more complicated, but you can still handle it).
I used this basic HTML tutorial back when I started: http://htmlgoodies.earthweb.com/primers/html/
. It looks like it may not be updated, but you can always do a Google search for "HTML tutorial beginners" and you'll get dozens of hits. Good luck!