Chapter 1, Getting Started with React, covers creating React projects and the fundamentals of building React components. This includes making a component configurable using props and interactive using state.

Chapter 2, Getting Started with TypeScript, starts with the fundamentals of TypeScript and its type system. This includes using inbuilt types as well as creating new types. The chapter then covers creating a React component with TypeScript types.

Chapter 3, Using React Hooks, details the common React Hooks and their typical use cases. The chapter also covers how to use the Hooks with TypeScript to make them type-safe.

Chapter 4, Approaches to Styling React Frontends, walks through how to style React components using several different approaches. The benefits of each approach are also explored.

Chapter 5, Using React Server and Client Components, covers how and when to use React Server Components and Client Components and also how to compose them together.

Chapter 6, Creating a Multi-Page App with Next.js, covers the fundamentals of building multi-page apps in a popular React framework called Next.js. This includes implementing different pages, links between them, and page parameters.

Chapter 7, Server Component Data Fetching and Server Function Mutations, demonstrates how React Server Components can fetch data from a database. The chapter also includes mutating database data using a React Server Function.

Chapter 8, Client Component Data Fetching and Mutations with TanStack Query, covers how React Client Components can fetch and mutate data from a database using a popular library called TanStack Query.

Chapter 9, Working with Forms, explores how forms can be implemented using several different approaches, including the latest React Hooks and a popular forms library.

Chapter 10, State Management, walks through how React state can be shared between different components. Several approaches are explored along with their benefits.

Chapter 11, Reusable Components, brings in several patterns for making React components highly reusable but still type-safe.

Chapter 12, Unit Testing with Vitest and the React Testing Library, first delves into how functions can be tested with Vitest. The chapter then moves on to how React components can be tested with the help of the React Testing Library.