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Many universities have DS courses based on the same syllabus and labs. I took this at NYU: http://news.cs.nyu.edu/~jinyang/fa12/ You can read the notes/papers and do the labs as instructed.

Where do you see Paxos? This looks like something simpler. It pretty much has to be as implementing Paxos would be too hard for a class exercise. I don't think it makes sense to do Paxos with 2 servers.

It appears that Paxos will be used in the third lab, http://pdos.csail.mit.edu/6.824/labs/lab-3.html.

In the 2010 version of this course, we implemented paxos on one of the later labs. It was considered one of the hardest I think.

How is Paxos hard? Inventing Paxos is hard. Implementing it is implementing a well-specified state machine.

If it was so easy papers like this would not exist: http://research.google.com/archive/paxos_made_live.html

All the lecture notes will be put online, and you are welcome to clone the code and do the labs. If your code passes the tests reliably, you would have gotten full credit.