# Step 12: Summary

In this tutorial you:

- Built a full stack application using React and Express
- Shared code between the frontend and the backend
- Created a UI library
- Used Nx dep graph capabilities to only retest and rebuild what is affected

## Learn More

- [Free Nx Course on YouTube](https://www.youtube.com/watch?time_continue=49&v=2mYLe9Kp9VM&feature=emb_logo)

**Dive Deep:**

- [Nx CLI](/{{framework}}/cli/overview)
- [Computation Caching](/{{framework}}/workspace/computation-caching)
- [Rebuilding What is Affected](/{{framework}}/guides/ci/monorepo-affected)