# Introducing the APIs #

### [Common Idioms](dev-guide/addon-development/api-idioms.html) ###
An introduction to idioms used throughout the SDK.

### [API Overview](dev-guide/addon-development/api-modules.html) ###
A quick introduction to all the modules provided in the
[`addon-kit`](packages/addon-kit/addon-kit.html) package as well as one module,
[`self`](packages/api-utils/docs/self.html), which is currently in the
[`api-utils`](packages/api-utils/api-utils.html) package but which is an important module for
add-on developers to know about.
