XBlock API Guide
http://edx.readthedocs.org/projects/xblock/en/latest/
XBlock Tutorial
If you haven't yet gone through the tutorial, do so!
http://edx.readthedocs.org/projects/xblock-tutorial/en/latest/
http://edx.readthedocs.org/projects/xblock/en/latest/
If you haven't yet gone through the tutorial, do so!
http://edx.readthedocs.org/projects/xblock-tutorial/en/latest/