Loann semantic html

-reconstruct treehouse landing page (best as I could)
-structure/semantics html
-microdata tagging
-didn't get a chance to add api
-in CSS, struggled to make section and article tags work as well as divs containing things. my html looks like spaghetti after trying so many different things.
-style trying to grasp microdata fully
-need to understand rules about nesting tags 
<hgroup> no longer used in html5?