In modern life, circuits are everywhere. Without circuits, you wouldn\\\'t have indoor lights. Without circuits, you wouldn\\\'t have the computer you\\\'re using to watch this lesson. Without circuits, you wouldn\\\'t have anything that is powered by electricity.
By learning all of the fundamentals first, it is much easier to build on them them to learn more advanced concepts. Learning the fundamentals first allows you to understand much more along the way. There are many tutorials on the internet you can use to learn about the fundamentals starting with DC circuits.