The class was "Automorphic forms on GL(2)". There used to be rather complete notes @ www.math.uchicago.edu/~ngo/AF.pdf but it seems like the author has taken them down. It would be much appreciated if someone can help me access these again (Should have saved them last time....)
Is this it Automorphic Forms on GL(2)?
Here are some additional note examples in case you wanted to peruse others.