Welcome to the Firefly III documentation.
Firefly III is a manager for your personal finances. It is self-hosted and open source.
For your quick reference here is a list of pages you really want to visit:
Is Firefly III something for me? How can I use it or run it?
The preferred way of running Firefly III is using Docker. It's easy to upgrade and easy to secure.
What can I import into Firefly III, and how? Where can I find more info?