Want to authorize book i just bought with Adobe ID but cant

Hello,

I recently purchased a book and this was my first time using adobe digital editions (i thought I was getting a pdf book, but nope...). Anyways, trying to view it asap, I just authorized my computer real quick so I could get through the process. Now however, I realized that I cant view the book on other devices, so I want to associate the book with my adobe ID (which I just created).

Can anyone help me figure out how to do this? I have been trying but I dont see how it is done.

Thanks