Update README.md to include full User Guide.

docs/README.md

@@ -1,29 +1,69 @@
-# User Guide
+# Chad Personal Assistant User Guide
 
 ## Features 
 
-### Feature-ABC
+- Maintain a list of Tasks, Deadlines and Events.
+- View your list at any time with a simple command `list`.
+- Mark each item as Done or Not Done.
+- Delete obsolete tasks.
 
-Description of the feature.
+## Quick Start Guide
+1. Download the latest Chad version from (here)[https://github.com/fahim-tazz/ip/releases].
+2. Go to your `Downloads` folder and double click on `chad.jar`.
+3. Type in commands to use Chad.
+4. Enjoy!
 
-### Feature-XYZ
-
-Description of the feature.
+---
 
 ## Usage
 
-### `Keyword` - Describe action
+### `list` - List all current tasks.
+
+Lists down all current tasks saved by Chad.
+- T, D and E represent Todo, Deadline and Event tasks respectively.
+- `[ ]` and `[X]` show whether a task is `Not Done` or `Done`, respectively.
+
+
+### `todo [task name]` - Add a new Todo item.
+
+Adds a new Todo task to your list.
+
+### `deadline [task name] /by [due date YYYY-MM-DD]` - Add a new Deadline item.
+
+Adds a new Deadline task to your list. 
+- The name should be followed by a ` /by ` keyword. 
+- The due date should come after the ` by `, and be in the format `YYYY-MM-DD`.
+
+### `event [event name] /from [start time] /to [end time]` - Add a new Event item.
+
+Adds a new Event to your list.
+- The name should be followed by a ` /from ` keyword.
+- The start time should come after the ` /from ` keyword, followed by ` /to `.
+- The end time should come after the ` /to ` keyoword.
+- Start and End times do not have any format constraints.
+
+### `mark [task no.]` - Marks a task as done.
+
+Marks the task at that serial number as done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+
+### `unmark [task no.]` - Marks a task as NOT done.
+
+Marks the task at that serial number as NOT done.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
 
-Describe the action and its outcome.
+### `delete [task no.]` - Removes a task from the list.
 
-Example of usage: 
+Permanently deletes the task at that serial number from the list.
+- Task numbers start from 1, and follow the ordering shown by the `list` command.
+- Deleted tasks CANNOT be recovered.
 
-`keyword (optional arguments)`
+### `find [search phrase]` - Finds any task that matches with the search phrase.
 
-Expected outcome:
+Searches for any task that contains the search phrase.
+- Search is CASE-SENSITIVE. `laundry` will NOT match with a task named `Do Laundry`.
 
-Description of the outcome.
+### `bye` - Saves the current tasks and exits Chad.
 
-```
-expected output
-```
+Saves the current task list on your computer, and exits Chad. Tasks will be retrieved the next time you open Chad.
+- You can also exit by clicking the [X] button on the Chad window. Don't worry, Chad will save your tasks no matter what!