There are so many offers out there right now from the photographic community and many are FREE!!. This one is aimed at those seeking to understand the essentials of their camera and their post-processing and it's from one of the best providers of tutorials, fstoppers.com:
You do have to "buy" this but it costs USD0.00.
The beautiful thing about mastering the basics of your camera and Photoshop is that it can be applied to every genre of photography. Once you understand and master the 17 lessons included in this tutorial, you'll have the building blocks to succeed in any photography goal you create for yourself. The lessons are:
Introduction to Cameras
Exposing Your Camera in Manual
Cameras and Lenses
Camera Modes and Exposure Compensation
Raw vs Jpeg
Cameras and Filters
Introduction to Lighting
Shooting in the Field
Introduction to Photoshop with Pratik Naik
Post Processing Practice with Lee
I hope you find something you like!