[Jessx]

Hi,
I wanted to ask about two things, which I'm not sure I understood correctly.
1. Can I just upload the folder in which calibre stores the books to a cloud and the use it on another computer for calibre, ie to download from the cloud (mega) to the new computer and point calibre to it as its library and expect calibre to be able to read it, or is there a better advised way?
2. I want my phone to read my calibre library, but I do not want to store the books on it. Is there a way to do that from a cloud and which app would you recommend as the reader?
Thanks so much