Coding

codeconquest.com

Coding on Khan Academy

Coding using blocks:

scratch.mit.edu

​

Photography

If you are using a camera:

Best Lesson in Photography for Beginners

Photography Basics for Noobs

Photography Tutorial: ISO, Aperture, Shutter Speed

6 Simple Camera Hacks to Get You Off AUTO Mode Forever

If you are using a smartphone:

The 101 of Smartphone Photography

6 Mobile Photography Tips You Must Know