I really want to learn the work of Laurent Lafforgue and the joint work of Zhiwei Yun and Wei Zhang. They both involve shtuka and trace formula, which I only know the basic idea. So I would like to know is there a road map to learn these works?
Especially, I notice Professor Laumon's book Cohomology of Drinfeld Modular Variety deals with drinfeld module and automorphic representation over function field. Is this book a good start point?
I would appreciate any suggestion for references for Shtuka, trace formula or any relevant topic. A road map will be fantastic!