I guess look for it right after you buy the moon. It's a small lil fagget that hovers around on the right side of one of your 5 worker panes. It just randomly popped up for me.. he's about the size of any of your workers, looks like some flying homosexual cupid or something. Just click him and page 2 is available.. however, the upgrades there are fucking ridiculously overpriced, and there's a small % you'll actually get them.