- Introduction
 - Lorentz and Poincare symmetries in QFT
 - Classical field theory
    
- my notes on this chapter
 - toying with symmetries (Lagrangians based on various symmetries)
 - functional derivatives
 - eqs.(3.180) and (3.181)
 
 - Quantization of free fields
 - Perturbation theory and Feynman diagrams