A Thousand Problems in Cosmology. Chapter 4: Black holes
  The fourth chapter of the collection of problems in cosmology, devoted to
black holes. Consists of basic introduction, sections on Schwarzschild and Kerr
black holes, a section on particles' motion and collisions in general black
hole space-times, and the astrophysical part. This version contains only
formulations of 137 problems. The full collection, with solutions included, is
available in the form of a wiki-based resource at www.universeinproblems.com.
The cosmological community is welcome to contribute to its development.
