feat: update README.md with new usage instructions

Author: jeffsieu

README.md

@@ -3,76 +3,32 @@
 ![TypeScript from Zero](./static/img/social-card.png)
 
 This repository serves as an interactive guide to TypeScript.
-It contains written guides in the form of README.md files, as well as code examples in the form of `.ts` files.
+
+It is built using Docusaurus.
+
+## Features
+
+- Interactive examples with solutions
+  - Progress saved locally
+- Explanation of TypeScript concepts from the ground up
+- Best practices for using TypeScript
 
 ## Prerequisites
 
 This course assumes that you have:
 
 - Proficiency with JavaScript (or minimally any other language)
 
-Good to have:
-
-- Some experience with TypeScript
-- VS Code installed
-
-## Setup
-
-```sh
-npm install # Install ESLint and TypeScript for type-checking in hands-on exercises.
-```
-
-We will be using [Visual Studio Code](https://code.visualstudio.com/) with the following extensions:
-
-- [Twoslash Query Comments](https://marketplace.visualstudio.com/items?itemName=Orta.vscode-twoslash-queries) - To show inline type previews
-- [ESLint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint) - To show linting errors
-- [Markdown Preview Enhanced](https://marketplace.visualstudio.com/items?itemName=shd101wyy.markdown-preview-enhanced) - To preview markdown files
-
-
-## Table of Contents
-
-- Basics
-  1. [Introduction to TypeScript](./chapters/1-basics/0-introduction-to-typescript/README.md)
-  1. [Type annotations](./chapters/1-basics/1-type-annotations/README.md)
-  1. [Inferred types](./chapters/1-basics/2-inferred-types/README.md)
-  1. [Overriding inferred types](./chapters/1-basics/3-overriding-inferred-types/README.md)
-  1. [Type aliases](./chapters/1-basics/4-type-aliases/README.md)
-  1. [Object types and interfaces](./chapters/1-basics/5-object-types-and-interfaces/README.md)
-  1. [Optional properties and types](./chapters/1-basics/6-optional-properties-and-types/README.md)
-  1. [Union and literal types](./chapters/1-basics/7-union-and-literal-types/README.md)
-  1. [Type assertions](./chapters/1-basics/8-type-assertions/README.md)
-  1. [Type guards](./chapters/1-basics/9-type-guards/README.md)
-  1. [Arrays, records and tuples](./chapters/1-basics/10-arrays-records-tuples/README.md)
-  1. [Classes](./chapters/1-basics/11-classes/README.md)
-  1. [Readonly types as const](./chapters/1-basics/12-readonly-types-as-const/README.md)
-
-- Intermediate
-  1. [Unknown vs any](./chapters/2-intermediate-concepts/1-unknown-any/README.md)
-  1. [Intersection types](./chapters/2-intermediate-concepts/2-intersection-types/README.md)
-  1. [Exclude types using Omit and Exclude](./chapters/2-intermediate-concepts/3-exclude-types-omit-exclude/README.md)
-  1. [Null, undefined, void and never](./chapters/2-intermediate-concepts/4-null-undefined-void-never/README.md)
-  1. [Variable types and typeof](./chapters/2-intermediate-concepts/5-variable-types-typeof/README.md)
-  1. [Variable keys and keyof](./chapters/2-intermediate-concepts/6-variable-keys-keyof/README.md)
-  1. [Satisfies keyword](./chapters/2-intermediate-concepts/7-satisfies/README.md)
-  1. [As vs type annotations vs satisfies](./chapters/2-intermediate-concepts/8-as-vs-type-annotations-vs-satisfies/README.md)
-  1. [Discriminated unions](./chapters/2-intermediate-concepts/9-discriminated-unions/README.md)
-
-- Advanced concepts
-  1. [Index types](./chapters/3-advanced-concepts/1-index-types/README.md)
-  1. [Function overloading](./chapters/3-advanced-concepts/2-function-overloading/README.md)
-  1. [Generic types](./chapters/3-advanced-concepts/3-generic-types/README.md)
-  1. [Conditional types](./chapters/3-advanced-concepts/4-conditional-types/README.md)
-  1. [Distributive conditional types](./chapters/3-advanced-concepts/5-distributive-conditional-types/README.md)
-  1. [Template literal types](./chapters/3-advanced-concepts/6-template-literal-types/README.md)
-  1. [Mapped types](./chapters/3-advanced-concepts/7-mapped-types/README.md)
-  1. [Infer in conditional types](./chapters/3-advanced-concepts/8-infer-in-conditional-types/README.md)
-  1. [Declaration merging](./chapters/3-advanced-concepts/9-declaration-merging/README.md)
+## Getting started
+
+To get started with TypeScript from Zero, access the online guide [here](https://jeffsieu.com/typescript-from-zero).
 
 ## Expectations
 
 ### What this course is
 
 - A guide to TypeScript syntax and best practices when using TypeScript in your codebase
+- An interactive learning experience with practical examples
 
 ### What this course is not