The CKM Matrix and the Heavy Quark Expansion
  These lectures contain an elementary introduction to heavy quark symmetry and the heavy quark expansion. Applications such as the expansion of heavy meson decay constants and the treatment of inclusive and exclusive semileptonic B decays are included. The use of heavy quark methods for the extraction of |V_cb| and |V_ub| is presented is some detail. 
Adam F. Falk