HOW TO READ CIRCUIT DIAGRAMS: 4 Steps - instructables this instructable will show you exactly how to read all those confusing circuit diagrams and then how to assemble the circuits on a breadboard! for all the electronics hobbyist wannabes this is a MUST-READ instructable. knowing how to read circuits is a very useful skill that will help you out all the time. especially if you start messing around with building little electronics projects. Circuit Diagram: How To Read And Understand Any Schematic Learn to read and understand any circuit diagram. There are only a few things you need to know, then you can build whatever circuit you want. explain with the help of video. Reply. joe Alexander says. November 21, 2017 at 9:22 pm.