I have started reading PCT, Spin and Statistics, and All That. Are there any more recent texts that I should be looking at instead?
There are usually 3 texts: Haag's is the most recent and emphasizes the algebraic C*/W* approach. The natural follow-up to <PCT, Spin and Statistics, and All That> is Bogolubov's et al. text of 1975: https://www.amazon.com/dp/B000IM4HLS/?tag=pfamazon01-20 which is hard to get, but may be available in a good library.