About the new starter kits

I have two Laravel projects. One already has Inertia set up with Breeze, while the other only has APIs in the controllers without any frontend setup.

I'm looking for a way (or a tutorial) to install Inertia on the existing API-only project and properly integrate it. Also, for the project that already has Inertia, I want to update the styling and bring in the new design.

Does anyone know the best approach or have any recommended resources for this?