Went through more of the tutorial

Box2D_v.2.2.1/Testbed/Tests/TestEntries.cpp
Box2D_v.2.2.1/Testbed/Tests/Tutorial/CanJumpTest.h
Box2D_v.2.2.1/Testbed/Tests/Tutorial/CertainFootContactListener.h
Box2D_v.2.2.1/Testbed/Tests/Tutorial/FootContactListener.h
  - Finished [The 'Can I jump' question]