We will be introducing a lot of series to Premium throughout the year. Editorially we wanted to make sure we had a hands on approach with every series so we'll be gradually releasing more content soon.
We wanted our early access readers to explore Premium without anything holding them back.
We built a review system to allow for fans of a series to help creators sell their work. Nothing convinces me to buy something more so than a great, thoughtful review. So even though everything is currently free, I guess you could pay it forward by writing something nice 