i am taking advanced solid state course, and my professor use marder textbook, and his lecture notes are just like complete copy of marder's textbook. i myself find marder's book very confusing, even things which i already understand are presented in complicated way. i feel i cannot absorb anything from it. especially the exercises, which become tutorial assessments, are very very difficult. is there a good substitute to marder textbook? a book that explain thing in simpler ways, more gradual, detail, and nearly covering as much as marder. for example i need chapters on band structure calculation technique in marder (OPW, LCAO, LAPW, LMTO) and transport theory (semiclassical). i want to see a lot of examples. i am a slow learner.