https://www.openintro.org/stat/videos.php
https://www.youtube.com/user/OpenIntroOrg/playlists?disable_polymer=1
FREE BOOK DOWNLAD
https://www.openintro.org/download.php?file=os3&referrer=/stat/textbook.php
For to a greater extent than intro:
https://www.youtube.com/watch?v=0qEHDReVUP4&list=PLjgj6kdf_snZv7dk0ktMm7Ch9RFajwKHb