Afrotechmod Tutorials:

• Beginner Tutorials            https://afrotechmods.com/tutorials/category/tutorials/beginner-tutorials/

• Intermediate Tutorials. https://afrotechmods.com/tutorials/category/tutorials/intermediate-tutorials/

• Advanced Tutorials:        https://afrotechmods.com/tutorials/category/tutorials/advanced-tutorials/

Electronics Tutorials
  https://sites.google.com/aceraschool.org/mrjonathansengineering/electronics/introduction-to-electronics

Getting Started With Electronics-Instructables Class
    https://www.instructables.com/Getting-Started-With-Electronics/

https://www.instructables.com/Electronics-Class/

Electronics Tutorials- Science Buddies
https://www.youtube.com/playlist?list=PLlBVuTSjOrcm8F3zUGjwitXXy_YnaklQ6

Voltage Divider and Transistor Circuits
https://sites.google.com/aceraschool.org/mrjonathansengineering/electronics/voltage-divider-and-transistor-circuits

Above: Voltage Divider used with a photocell(light-dependent resistor) as a sensor; at right used to control a motor with light