Welcome to the Typesetting Museum! It features information on how Hot Metal, Linotype, and Intertype were used in typesetting before 1968.
When you arrive at the site, all you have to do to navigate is scroll down the page and click on the thumbnail for the section that interests you. This will take you to either it’s page or a .PDF on the subject.
In addition to Hot Metal, Linotype, and Intertype, the museum also includes information on Teletype.
I also found this great YouTube video on How Mechanical Typesetting Works  if you want to see it in action!
Go check it out today!