SignUp Missing – Prezi Viewer Review

I just learned about Prezi through my Business and Professional Communications class a a strong recommendation. I immediately installed Prezi. I am unable to get started because I do not see how to signup. I see signin but not signup. Please advise. I hope I can submit this without the star rating cuz at this point, it is not working for me and I would like to give it a chance. Looks like I have to “star” it. So I shall give 3 stars for now with optimistic hopes.
Review by uis4rainey on Prezi Viewer.