# Using Modules
In this chapter, you'll take at look at the sources for modules as well as how to implement a module within your project. This chapter doesn't cover how you'd write your own module; there's a separate chapter about that.
First, we'll take a quick look at the various locations to which modules are commonly published. You'll also learn which modules are available to subscribers.
In this section, you'll learn how to use a module within your app. We'll look at implementing a native module in both iOS and Android.
Get started: Obtaining Modules >