This video walks through the basics of Tinkercad Circuits and shows how to connect a potentiometer and photoresistor to an LED in order to vary the resistance. For other great tutorials, please subscribe: https://www.youtube.com/remiwauthy Here's a link to the PDF of the electronic components: http://makerspace.isfeldschool.com/wp-content/uploads/2016/09/Electronic-Components-and-their-symbols.pdf Credit for the component chart goes to Steve Claassen, a teacher in Courteney, BC, Canada. Check out his website and resources here: http://makerspace.isfeldschool.com/