I would be very interested in those .mp3 files of the big four...but specifically an up-to-date chain of command because I am finding it very difficult to find the information online. Plus, it would be a BIG help to know exactly the way we are supposed to say each one...according to OCS.
Thing is, the chain of command is different for each class. The first person in your chain of command changes daily, the second (two different people) and the third are unique to your class, the fourth is unique to your battalion, and the rest are not listed for security reasons. Pay attention to what position they hold. That's about all you can learn before you report to OCS. As far as the other sections of Appendix B (Navy and Marine Corps Rank Structure, General Orders of a Sentry, and Articles of the Code of Conduct), they can be found in the DEP guide or online:
http://www.nsgreatlakes.navy.mil/otcp/ocs/chain_of_command.htm
http://www.nsgreatlakes.navy.mil/otcp/ocs/code_conduct.htm
http://www.nsgreatlakes.navy.mil/otcp/ocs/gen_orders.htm
http://www.chinfo.navy.mil/navpalib/ranks/rankrate.html