Tweak doc index.md

Author: microbit-grace

docs/index.md

@@ -10,12 +10,18 @@ nav_order: 1
 
 <img alt="microbit-universal-hex logo" src="img/microbit-uh-logo.png" width="300px">
 
+## Introduction
+
 Create Universal Hex files for the micro:bit.
 
 This is the documentation for the micro:bit Universal Hex library.
 
 Here you will find the available public API to convert Intel Hex strings into Universal Hex strings and vice-versa.
 
+## Getting started
+
+Read the [Quick guide](quick-guide.md).
+
 ## Universal Hex format
 
 The micro:bit Universal Hex format is a superset of the
@@ -28,28 +34,24 @@ Detailed information of the Universal Hex format can be found in the [specificat
 This TypeScript/JavaScript library can be used to create a
 micro:bit Universal Hex from two or more micro:bit Intel Hex files.
 
-## Online tool
+## Web tool
 
-An implementation example can be found in the [webtool.html](./examples/webtool.html)
-in the repository and it is hosted in the
-[micro:bit Tech Site](ttps://tech.microbit.org).
+This [Universal Hex Creator web tool](https://tech.microbit.org/software/universal-hex-creator/) can
+generate a Universal Hex from two Intel Hex files (one for micro:bit V1 and another for micro:bit V2).
 
-This web tool can generate a Universal Hex from an Intel Hex file for micro:bit
-V1 and an Intel Hex file for micro:bit V2.
+An implementation example can be found in the [webtool.html](https://github.com/microbit-foundation/microbit-universal-hex/blob/main/docs/examples/webtool.html) file, which produces this [Universal Hex Creator demo](./examples/webtool.html).
 
-- [Universal Hex Creator](https://tech.microbit.org/software/universal-hex-creator/)
-- [Universal Hex Separator](https://microbit-foundation.github.io/microbit-universal-hex/examples/separate.html)
+An implementation example showing the reverse process of separating a Universal Hex into individual Intel Hex files can be found in the [seperate.html](https://github.com/microbit-foundation/microbit-universal-hex/blob/main/docs/examples/separate.html) file. It produces this [Universal Hex Separator demo](./examples/separate.html).
 
 ## Related documentation
 
-[micro:bit Universal Hex Specification](https://github.com/microbit-foundation/spec-universal-hex) contains a lot more information
-about the file data format.
+- [micro:bit Universal Hex Specification](https://github.com/microbit-foundation/spec-universal-hex) contains a lot more information
+  about the file data format.
 
-[GitHub](https://microbit-foundation.github.io/microbit-universal-hex/) contains general documentation for this
-library.
+- [GitHub](https://microbit-foundation.github.io/microbit-universal-hex/) contains general documentation for this
+  library.
 
-[The micro:bit Tech Site](https://tech.microbit.org) contains general technical information about the
-micro:bit.
+- [The micro:bit Tech Site](https://tech.microbit.org) contains general technical information about the micro:bit.
 
 ## License