Update User Guide to show target users and value proposition

docs/UserGuide.md

@@ -5,6 +5,18 @@ BookBuddy is an application that helps users track and manage the list of books
 that they are reading. It is optimised for users that are familiar with the CLI so that
 the tracking and management objectives can be achieved more efficiently.
 
+#### Target user and value proposition
+BookBuddy targets people who are comfortable and proficient with using command-line-interfaces(CLI). These users 
+typically prefers the efficiency and flexibility of CLI environments over Graphical user Interfaces (GUIs). They are 
+likely to be avid readers who read multiple books simultaneously and need an effective way to organise their reading 
+lists.
+
+Therefore, BookBuddy offers a streamlined and efficient solution for tracking and managing reading lists directly from 
+the command line. It provides quick access to book management features for users who prefer keyboard-driven commands and
+enjoy the directness and simplicity of CLI tools. With BookBuddy, users can easily add, update, and review their reading
+progress without the overhead of navigating traditional graphical applications, saving time and enhancing their reading 
+experience.
+
 ## Table of Contents
 * [Getting Started](#getting-started)
 * [Features](#features)
@@ -256,6 +268,7 @@ list-rated
 ```
 
 Example output:
+
 ````
 Books sorted by rating:
 The Boy in Striped Pyjamas - 5