Over the last two years YC companies have raised 190 Series A’s and over $2B of capital.
From this process, YC accumulated information about every one of those rounds while working with founders all the way to the close.
They have previously published some of what they learned, like: Standard and Clean Series A Term Sheet, Process and Leverage in Fundraising, etc.
YC was also working on a comprehensive Series A Guide which they released recently. @ ycombinator.com/resources/series-a-guide.
This resource collects nearly everything they have learned about Series A’s over the period of existence.
It is designed to help founders tactically and strategically plan for fundraises.