add a simple user guide

New users will not know what are the features and commands of Bob.

A user guide will help new users orient themselves with Bob.

Let's add a new user guide that explains the features and
commands of Bob.

docs/Bob.txt

@@ -0,0 +1,8 @@
+D00017Finish CS2103T iP270920242359URGENT
+T00010Eat dinnerJustAnotherDay
+T00007Wake upJustAnotherDay
+E00013SDG Hackathon260920240000280920240000
+D00022Finish CS1101S grading270920240000URGENT
+T00009Eat lunchJustAnotherDay
+T00015Relax for a bitURGENT JustAnotherDay
+T00020Prepare for midtermsURGENT

docs/README.md

@@ -1,30 +1,306 @@
-# Duke User Guide
+# Bob User Guide
 
-// Update the title above to match the actual product name
+---
 
-// Product screenshot goes here
+![Screenshot of a window of Bob.](./Ui.png)
 
-// Product intro goes here
+Meet **Bob**, the ultimate companion that not only helps you manage tasks, 
+but also encourages you to finish them!
+
+With **Bob**, you can:
+- Manage different types of tasks (todo, deadline, event, etc.),
+- Find tasks based on keywords,
+- Tag tasks with different tags _#tags!_
+- And more!
+
+See below for the various things that you can do in Bob!
+
+---
+
+## Adding todos
+
+Add a _todo_ task with a short description.
+
+Example: 
+
+```
+todo Buy bread
+```
+
+Bob will respond with:
+
+```
+added: [T][ ] Buy bread
+```
+
+---
 
 ## Adding deadlines
 
-// Describe the action and its outcome.
+Add a _deadline_ with a date and time. 
+The format for DateTime input is: `DD/MM/YYYY hhmm`
+
+Example: 
+```
+deadline Finish CS2103T iP /by 26/9 2359
+```
+
+Bob will respond with:
+
+```
+added: [D][ ] Finish CS2103T iP (by: {26-Sep-2024 2359})
+```
+
+---
+
+## Adding events
+
+Add an _event_ with a start and end time. 
+The format for DateTime input is: `DD/MM/YYYY hhmm`
+
+Example: 
+
+```
+event SDG Hackathon /from 25/9 /to 27/9 2359
+```
+
+Bob will respond with:
+
+```
+added: [E][ ] SDG Hackathon (from: {25-Sep-2024 0000} to: {27-Sep-2024 2359})
+```
+
+---
+
+## Listing tasks
+
+List all the task that you have currently added to your list.
+
+Example:
+
+```
+list
+```
+
+Bob will respond with:
+
+```
+1. [T][ ] Buy bread
+2. [D][ ] Finish CS2103T iP (by: {26-Sep-2024 2359})
+3. [E][ ] SDG Hackathon (from: {25-Sep-2024 0000} to: {27-Sep-2024 2359})
+```
+
+---
 
-// Give examples of usage
+## Mark tasks
 
-Example: `keyword (optional arguments)`
+Mark a task as done. 
+The index is the number that you see when you ask Bob to `list` your tasks.
 
-// A description of the expected outcome goes here
+Example:
 
 ```
-expected output
+mark 1
 ```
 
-## Feature ABC
+Bob will respond with:
+
+```
+Nice! I've marked this task as done:
+[T][X] Buy bread
+```
 
-// Feature details
+---
 
+## Unmark tasks
+
+The opposite of marking a task as done, mark it as NOT done.
+
+Example:
+
+```
+unmark 1
+```
+
+Bob will respond with:
+
+```
+OK! I've marked this task as not done:
+[T][ ] Buy bread
+```
+
+---
+
+## Delete tasks
+
+Delete a task from your list.
+
+Example:
+
+```
+delete 1
+```
+
+Bob will respond with:
+
+```
+OK, I've removed this task:
+[T][ ] Buy bread
+Now you have 2 tasks in the list.
+```
+
+---
+
+## Delete ALL tasks
+
+Reset your list by deleting ALL the tasks. Do this at your own risk!
+
+Example:
+
+```
+reset
+```
+
+Bob will respond with:
+
+```
+OK, I've removed all your tasks.
+```
+
+---
+
+## Find certain tasks
+
+Find tasks by searching a keyword from their description.
+
+Example:
+
+```
+find hackathon
+```
+
+Bob will respond with:
+
+```
+Here are the matching tasks in your list:
+2. [E][ ] SDG Hackathon (from: {25-Sep-2024 0000} to: {27-Sep-2024 2359})
+```
+
+---
+
+## Tag tasks
+
+Tag tasks with whatever name you want _#tags!_
+
+Example:
+
+```
+tag 1 URGENT
+```
+
+Bob will respond with:
+
+```
+OK, I've tagged this task with #URGENT:
+[D][ ] #URGENT Finish CS2103T iP (by: {26-Sep-2024 2359})
+```
+
+---
+
+## Show all tags
+
+Show all tags and the tasks that are tagged.
+
+Example:
+
+```
+tag
+```
+
+<details>
+
+<summary>Using this list</summary>
+
+1. `[D][ ] #URGENT Finish CS2103T iP (by: {26-Sep-2024 2359})`
+2. `[T][ ] #JustAnotherDay Eat dinner`
+3. `[T][ ] #JustAnotherDay Wake up`
+4. `[E][ ] SDG Hackathon (from: {26-Sep-2024 0000} to: {28-Sep-2024 0000})`
+5. `[D][ ] #URGENT Finish CS1101S grading (by: {27-Sep-2024 0000})`
+6. `[T][ ] #JustAnotherDay Eat lunch`
+7. `[T][ ] #URGENT #JustAnotherDay Relax for a bit`
+8. `[T][ ] #URGENT Prepare for midterms`
+
+[Example Data File](./Bob.txt)
+
+</details>
+
+Bob will respond:
+
+```
+#URGENT:
+  1. [D][ ] #URGENT Finish CS2103T iP (by: {27-Sep-2024 2359})
+  5. [D][ ] #URGENT Finish CS1101S grading (by: {27-Sep-2024 0000})
+  7. [T][ ] #URGENT #JustAnotherDay Relax for a bit
+  8. [T][ ] #URGENT Prepare for midterms
+#JustAnotherDay:
+  2. [T][ ] #JustAnotherDay Eat dinner
+  3. [T][ ] #JustAnotherDay Wake up
+  6. [T][ ] #JustAnotherDay Eat lunch
+  7. [T][ ] #URGENT #JustAnotherDay Relax for a bit
+```
+
+---
+
+## Untag a task
+
+Remove a specific tag from a task, or ALL tags from a task.
+
+Example:
+
+```
+untag URGENT 8
+```
+
+Bob will respond:
+
+```
+OK, I've removed tag #URGENT from this task:
+[T][ ] Prepare for midterms
+```
+
+#### OR
+
+Example:
+
+```
+untag 7
+```
+
+Bob will respond:
+
+```
+OK, I've removed all tags from this task:
+[T][ ] Relax for a bit
+```
+
+---
+
+## Exit
+
+Say goodbye to Bob :(
+
+Example:
+
+```
+bye
+```
+
+Bob will respond:
+
+```
+I'll be here if you need me. Catch you later!
+```
 
-## Feature XYZ
+and exit immediately.
 
-// Feature details
+---