There are two types of projects on Penflip:
A 'book' project has a collection of files. Each chapter is a separate file. When you export your project, the files will be combined and turned into a presentable book. With a new book project, some files are generated to get you started. You can create new files/chapters as needed for your project.
A book project also comes with a 'discussion board' where anyone working on the project can participate in conversations about the project. New conversations on different topics can be opened at any time, and old ones that are no longer relevant can be closed.
A 'document' project has a single file, much like a Google Doc or Word document. This type of project is ideal for short stories and collaborative essays. With longer papers (e.g. a PhD thesis), a book project is recommended, so that the sections of the paper can be organized into different files.
Instead of a discussion board, a document project has a simple unthreaded 'chat' feature.
Public vs. private
When you create a new project, you can choose to make it public or private. A public project can be discovered by anyone, while a private one can only be seen by people who you explicitly share it with.
Still confused? Email firstname.lastname@example.org for help!