Photoshop Principal Product Manager Bryan O’Neil Hughes shows how to use curves in the above video. He covers the basics of curves in both Camera Raw and inside of Photoshop.
While this is a very basic overview of what the curves adjustment does and an intro to the interface, check out the video from Phlearn below that goes a little more in-depth on using curves adjustment layers in Photoshop.
[youtube https://www.youtube.com/watch?v=sWn4BYiEEeo&w=700]
Love your lessons! Always clear and inspiring. Thanks a lot.
Shmuel