The “what” and “why”. Brief 1-3 paragraph description of the product. This should define the product as a whole and use as few buzz words as possible.
Anything else need to be done before you can start using the product? This section may or may not exist, but it shouldn’t be step-by-step instructions. Rather, it should link back to the relevant materials for whatever prereqs must be completed.
Up for debate: signing up for an account could be a pre-req, depending on how complicated.
List the relevant articles to read next.