Update Duke user guide

docs/README.md

@@ -1,29 +1,162 @@
-# User Guide
+# Duke User Guide
 
-## Features 
+## Introduction
 
-### Feature-ABC
+Introducing Duke, your very own text-based personal assistant! Duke keeps track of all your tasks, from ToDos (with no
+associated date), Deadlines (with a due by date), and Events (with a date which it happens)!
 
-Description of the feature.
+## Features
 
-### Feature-XYZ
+### ➕🗑️ Add and Delete tasks!
 
-Description of the feature.
+Easily add and delete ToDos (with no associated date), Deadlines (with a due by date), and Events (with a date which it
+happens).
+
+### ✅ Mark tasks as done!
+
+When you are done with tasks, Duke helps you keep track.
+
+### 🔍 Find tasks!
+
+If you have many tasks, you can search for them in Duke!
+
+### 💾 Automatically saves tasks!
+
+Duke will remember the tasks you have entered each session.
+
+## Setup
+
+To setup Duke, follow these steps:
+
+1. Make sure you have [Java 11](https://www.oracle.com/sg/java/technologies/javase/jdk11-archive-downloads.html)
+   installed
+2. Download the latest Duke release `.jar` file from the [release page](https://github.com/mjgui/ip/releases)
+3. Double click the `.jar` file to run it!
 
 ## Usage
 
-### `Keyword` - Describe action
+Type commands into the text box for Duke to follow!
 
-Describe the action and its outcome.
+### `todo` or `t` - Add new ToDo task
 
-Example of usage: 
+Adds a task (without any date attached) to Duke. Pass in a title of the task after the `todo` keyword.
 
-`keyword (optional arguments)`
+Example usage:
+
+`todo CS2103 User Guide` OR `t CS2103 User Guide`
 
 Expected outcome:
 
-Description of the outcome.
+```
+Got it. I've added this task:
+ [T] [X] CS2103 User Guide
+Now you have 1 task in the list.
+```
+
+### `deadline` or `d` - Add new Deadline task
+
+Adds a deadline to Duke. Pass in a title of the task after the `deadline` keyword, followed by the `/by` keyword,
+followed by the deadline of the task in `YYYY-MM-DD` format.
+
+Example usage:
+
+`deadline CS2103 Final Submission /by 2022-09-19` OR `d CS2103 Final Submission /by 2022-09-19`
+
+Expected outcome:
 
 ```
-expected output
+Got it. I've added this task:
+ [D] [ ] CS2103 Final Submission (by: Sep 19 2022)
+Now you have 1 task in the list.
+```
+
+### `event` or `e` - Add new Event task
+
+Adds an event to Duke. Pass in a title of the event after the `event` keyword, followed by the `/at` keyword, followed
+by the date of the event in `YYYY-MM-DD` format.
+
+Example usage:
+
+`event Graduation Day /at 2022-09-19` OR `d Graduation Day /at 2022-09-19`
+
+Expected outcome:
+
+```
+Got it. I've added this task:
+ [E] [ ] Graduation Day (at: 2022-09-19)
+Now you have 1 task in the list.
+```
+
+### `list` - Lists all tasks in Duke
+
+Example usage:
+
+`list`
+
+Expected outcome:
+
+Tasks that you have previously added will be listed. The letters `[D]`, `[E]` and `[T]` represent Deadlines, Events and
+ToDos respectively, while `[ ]`/`[X]` represents whether the task is not done / done.
+
 ```
+1. [D] [ ] CS2103 Final Submission (by: Sep 19 2022)
+2. [T] [X] CS2103 User Guide
+```
+
+### `mark` - Mark a task as done
+
+Pass in the index of the task (starting from 1, based on the `list` command above) to be marked as done after the `mark`
+keyword.
+
+Example usage:
+
+`mark 1`
+
+Expected outcome:
+
+```
+Nice! I've marked this task as done:
+ [D] [X] CS2103 Final Submission (by: Sep 19 2022)
+```
+
+### `delete` or `del` - Delete a task
+
+Pass in the index of the task (starting from 1, based on the `list` command above) to be deleted after the `delete`
+keyword.
+
+Example usage:
+
+`delete 1` or `del 1`
+
+Expected outcome:
+
+```
+Noted. I've removed this task:
+ [D] [X] CS2103 Final Submission (by: Sep 19 2022)
+Now you have 1 task in the list.
+```
+
+### `find` or `f` - Find a task
+
+Search for a task based on a certain string. Pass in the search string  `find` keyword.
+
+Example usage:
+
+`find CS2103` or `f CS2103`
+
+Expected outcome:
+
+```
+Here are the matching tasks in your list:
+ 1. [D] [X] CS2103 Final Submission (by: Sep 19 2022)
+```
+
+### `bye` - Exit duke
+
+Example usage:
+
+`bye`
+
+Expected outcome:
+
+Duke will exit.