Here is a YouTube video about Modeling Even and Odd Functions with Fourier Series, and is part of a growing collection of videos I have found to be useful. The reason is demonstrating examples of using Fourier series to solve problems and understanding how other functions behave and understanding science related to software defined radio.
This tutorial, "Modeling Even and Odd Functions with Fourier Series" is free education you can watch, which will help you deepen your knowledge and be better prepared for licence exams, schoolwork, or operating radio equipment.