List of schematic symbols for those of you who may be interested : r/coolguides
UNIT 3.1 - ELECTRIC CIRCUITS | Flashcards
Parallel Batteries | DC Circuits | Electronics Textbook
How to Read a Schematic - SparkFun Learn
Electronic Circuit symbols and Diagrams - ElecCircuit.com
How can I represent a schematic diagram of circuit for three D-cells placed in a battery pack to power a circuit containing three light bulbs in parallel? | Socratic