# Enhance your code

[![](/img/icons/dbt-bit.svg)](./environment-variables.md)

#### [Environment variables](./environment-variables.md)

[Learn how you can use environment variables to customize the behavior of a dbt project.](./environment-variables.md)

[![](/img/icons/dbt-bit.svg)](./hooks-operations.md)

#### [Hooks and operations](./hooks-operations.md)

[Learn how to use hooks to trigger actions and operations to invoke macros.](./hooks-operations.md)

[![](/img/icons/dbt-bit.svg)](./packages.md)

#### [Packages](./packages.md)

[Learn how you can leverage code reuse through packages (libraries).](./packages.md)

[![](/img/icons/dbt-bit.svg)](./project-variables.md)

#### [Project variables](./project-variables.md)

[Learn how to use project variables to provide data to models for compilation.](./project-variables.md)

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