Done with pointers and this chapter called "references" is like pointers, so if this is only the same as pointers, then I could skip it but if references has a features that pointers can't then I will learn it now. I can find the answers if I finish reading it but it's boring if you're thinking its the same as what you've recently learned.
References are of particular importance when working with classes. In general references enable you to use the pass-by-reference mechanism with functions. Rvalue references are also indispensable with operator overloading.