I put my random study notes and cheatsheets here.
CS240 Algorithm Design & Analysis
EE150 Signals & Systems
CS181 Artificial Intelligence
CS110 Computer Architecture
Python Cheatsheets from DataCamp (not made by me! You can find more here: https://www.datacamp.com/community/data-science-cheatsheets?posts_selected_tab=must_read ) that I found helpful for some Python beginners.