United they hate Book

An excellent, thoroughly readable and pedagogically excellent introduction to the field, starting from the basics of field quantisation, through some systematics of renormalisation and into an exploration of non-abelian gauge theory, with very good problem sets as well.

There are aspects of the discussion which could use a little more rigour, the most obvious example being the discussion of the renormalisation group, and I would have liked to have seen a more detailed discussion of the renormalisation process, but overall very good.