How about from the horse’s mouth?
If you would have continued in The Ethics of Liberty, you’d find:
Property Rights and the Theory of Contracts
However, to the OP:
Might I make a suggestion…hold off on MES and EoL and try For a New Liberty first. Then perhaps a more introductory economics text (or two or three, actually). You’ll get much more out of MES that way.
After you read that, check here. Then finally, you might check out the list of reading lists.