Hello!
I was attracted to this task precisely because in the last few days I have been exploring the ways to publish an eBook of my own. Since I do not have the entire content ready yet, helping you out would be very useful because I would be able to see for myself how the entire process works.
Of course, I would be more comfortable if you were to create the new accounts, or if you do not have the time, provide me with a username and password you feel comfortable with, as you are the one who will continue using it. (or just the username, because I presume you will be changing the password later anyway).
I really hope you will give me a chance to see the inside workings of the eBook publishing business for myself.
In any case, I wish you luck with your work.
Regards,
Andrijana