In a previous life, I used to teach economics at both Oxford and SciencesPo. Here are my notes and slides from those courses.
Oxford University
Prelim Microeconomics:
Prelim Macroeconomics:
Core Microeconomics:
Quantitative Economics (Econometrics)
Supplemental notes:
Non-academic
SciencesPo
Game Theory: An introduction with applications to industry (MSc course)