Orientation Week 2022 Hunt - F'22
This Is Not a Puzzle Hunt - S'22
Orientation Week 2021 Hunt - F'21
Spam Hunt - F'21
Pirate Hunt - S'21
... Even older hunts
Here are some resources to help you get started on some puzzles:
Puzzled Pint's "Puzzling Basics"
Puzzled Pint's "Code Sheet"
MIT's "Thinking About A Puzzle"
by Allen Rabinovich
Microsoft's College Puzzle Challenge Tools and Resources
(crossword clue lookup)