Step 1: Publish your book. #
Click [Publish] and choose a format your need. (HTML is taken as an example) Then select [Compress to ZIP after output] and click [Confirm].
Step 2: Click [Open Folder] to select the zip file. #
Step 3: Share your book via DropBox/WeTransfer/ Google Drive. #
Select the zip file in the folder to DropBox/WeTransfer/ Google Drive.
