# Jupyter Notebook
CS Jupyter Lab Server is aviable at [https://djnb.cs.uwindsor.ca/](https://djnb.cs.uwindsor.ca/)
### Understand Notebook Cells
A Jupyter Notebook is made up of individual blocks called **cells**. The two primary cell types you will use are:
- **Code Cells:** Used to write and execute programming logic (default is Python). Outputs appear directly below the cell.
- **Markdown Cells:** Used to write formatted narrative text, explanations, headings, and bullet points using Markdown syntax.
- **Verification:** Click the cell dropdown menu in the toolbar to toggle any cell between "Code" and "Markdown".
1. Click on the first empty cell (which defaults to a code cell).
2. Type a simple print statement:
```
print("Hello, Jupyter!")
```
3. Run the cell by pressing **Shift + Enter** on your keyboard (or clicking the **Play ▶** button in the toolbar).
- **Verification:** Confirm that the text `Hello, Jupyter!` appears directly underneath the code cell.
### Add Text Using Markdown
1. Insert a new cell below by clicking the **+** button in the toolbar or pressing **B** while in command mode.
2. Change the cell type to **Markdown**.
3. Type some formatted text:
```
# My Notes
This is a **bold** explanation of my code workflow.
```
4. Press **Shift + Enter** to render the text.
- **Verification:** Check that the Markdown code converts into a clean heading and bold text instead of raw code.
### Essential Keyboard Shortcuts
Jupyter operates in two modes: **Edit Mode** (typing inside a cell, green border) and **Command Mode** (navigating cells, blue border). Press **Esc** to enter command mode, and **Enter** to edit.
- **`Shift + Enter`**: Run current cell and move to the next.
- **`A`**: Insert a new cell *above* the current cell.
- **`B`**: Insert a new cell *below* the current cell.
- **`M`**: Change active cell to Markdown.
- **`Y`**: Change active cell to Code.