We don't have an official import feature yet, though Jacob (creator) will be prioritizing an "Import from Word" tool in the next couple of months due to requests.
For now, you can copy-paste each scene/chapter into Dabble from the chapter in your document (or other writing program). Create additional scenes as well if needed. It can be a bit tedious, but it doesn't take too long.
UPDATE!
*We recently released a feature that may help the process!*
When you paste content into Dabble, it will now look for scene breaks and chapter headings! If they are detected, it will automatically create the chapters and scenes for you.
A chapter will be the text "Chapter 1: This is a chapter title" on a line by itself, or "Chapter 1 [newline] This is a chapter title" where the title is directly after the chapter number. (If you don't have a chapter title it will still work).
A new scene in a chapter is recognized by either "#" or "***" on a line by itself.
Just select (copy) your whole manuscript starting with Chapter 1 and paste it into Chapter 1 of Dabble. This should make importing much easier!