Shameless plug, at Quantopian we have a bunch of materials (usually notebooks, sometimes also videos) covering introductory material in quant finance and Python

Shameless plug, at Quantopian we have a bunch of materials (usually notebooks, sometimes also videos) covering introductory material in quant finance and Python: https://www.quantopian.com/lectures https://www.quantopian.com/lectures (I work at Quantopian)