Documentation and Useful Resources
The digiKam documentation comes as a package usually called digikam-doc that you can install locally. You can also read it online (updated automatically every Friday). Some options might differ from your local installation, because the online manuals cover to the development version:
digiKam tutorials wiki offers tutorials that cover various digiKam tools and functionality.
API and Database Schema
If you plan contribute as a developer to digiKam, you might find the following links useful:
Use SQliteBrowser to work with SQlite3 database files.
We encourage you to improve the existing documentation by submitting comments, corrections, and patches. If you’d like to help to the documentation, have a look at the Contribute page.