Mailchimp learning curve

I am desperately mugging up on how to get Mailchimp to send out an ebook! I am sure it will do it; the trick is for me to find out how. 

I've googled how to do it, and it sounds simple; I've changed the cover on my Word copy of Fair Border Bride and re-saved it as a PDF, so I guess I am good to go as they say these days. I hesitate because I'm slightly distracted by an aching tooth and know that an appointment with the dentist is looming in 45 minutes. Might be better to wait until this afternoon when the dentistry will all be over.  I wouldn't want to get half-way through the process and then have to leave it or worse still, make an absolute hash of it.

Also I think my newly ordered mouse will arrive today. I'm hoping it will correct the slovenly way my old mouse is operating - clicking when it feels like it and ignoring me at other times. I suppose they do wear out at some point.