Here’s an old Catechism with a great explanation of the symbolism of the Tridentine Mass (the rest is standard fare). Here’s the chapter on the Mass.
I was surprised, however, to see this question:
Q. Why is the *Pax, *or kiss of peace, given before communion?
A. To signify, that peace and mutual charity, which ought to be among the faithful, who all eat of one bread and of the Eucharist and are all members of one mystical body.
I was under the impression that the kiss of peace had been dropped well before the Council of Trent. So when was it actually dropped?