Patty Leitner, award-winning college math teacher, has been making instructional math videos for years, and has allowed me to link to her awesome patty's calculus videos.
The 47 videos are grouped into four playlists: Limits, Derivatives, Applications, and Integrals.
Each part has 10 to 14 videos of about 35 to 60 minutes. If you look carefully you can locate some free PDF handouts to fill in while you watch the videos. It's a proven educational bonanza, all for free to you and/or your students.
Students: If you like these videos, let Patty know! On twitter at @pattysmathclass or email her at firstname.lastname@example.org
Teachers: If you use these videos as a class resource, tell Patty and she can put your name on the "approved" list! On twitter at @pattysmathclass or email her at email@example.com