The HN crowd might enjoy Structure and Interpretation of Classical Mechanics: https://mitpress.mit.edu/sites/default/files/titles/content/sicm/book.html https:/

The HN crowd might enjoy Structure and Interpretation of Classical Mechanics: https://mitpress.mit.edu/sites/default/files/titles/content/sicm/book.html https://mitpress.mit.edu/sites/default/files/titles/content/... . For the more mathematically minded, the short little book by Gelfand and Fomin is (I think) a pretty good intro.