Code walk-through: new developers
Sage Weil provides a high-level introduction to the Ceph code base, targeting new contributors. This talk focuses on the code itself and how to get oriented.
You may also want to look at • 2017-JAN-26 -- Ceph Tech Talk: Gettin... for an introduction to the development environment (how to clone, build, test, find an open a bug, open a pull request, etc.).