I'm a computer science graduate (aka, I hope I'm a geek) who did the whole html / css track at Code Academy in about 3 hours (aka, hopefully I'm past lesson 0, I haven't taken any web dev classes or some such ever) but trying to keep all the possible tags in my brain at once is still hard. I feel like this kind of tool does nothing if the newbie doesn't know the tags to match the ideas they have for the page.