Does anyone know of an easy proof of ShannonMcMillanBrieman Theorem? Thanks

In addition to Igor's answer, there's also: D. Ornstein and B. Weiss, "The ShannonMcMillanBreiman theorem for a class of amenable groups", Israel J. Math. 44 (1983), 5360. 


http://www.yaroslavvb.com/papers/algoetsandwich.pdf is pretty nice. 

