Landing page - update with better marketing copy, maybe rethink display content

This is a great page for displaying the templates and for users who know they want to use the product. If a user is looking for components, or maybe doesn't even know if AMP Start is for them, this is very confusing.

Might be dependent on user journeys sprint @ericlindley-g

Other suggestions:
- start with more of a "what do you want to do?" style experience
- start with a "how it works" section- give a visual reference for the components
(design feedback)