Add Brother printer installation instructions for Linux

- Added resources and download links for Brother printer drivers (MFC-9010CN and DCP-L2520DW).
- Included installation commands for downloading and installing printer drivers.
- Provided detailed step-by-step instructions for extracting and running the installer script.
- Clarified options for USB and network printer setups during installation.

notes/brother.md

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+# Brother
+
+## Table of Contents
+
+- [Brother](#brother)
+  - [Table of Contents](#table-of-contents)
+  - [Resources](#resources)
+  - [Installation Commands](#installation-commands)
+  - [Installation Instructions](#installation-instructions)
+
+## Resources
+
+- **Brother MFC-9010CN**: [Driver Download](https://support.brother.com/g/b/downloadtop.aspx?c=ca&lang=en&prod=mfc9010cn_us)
+- **Brother DCP-L2520DW**: [Driver Download](https://support.brother.com/g/b/downloadtop.aspx?c=ca&lang=en&prod=dcpl2520dw_us_eu)
+
+## Installation Commands
+
+Download and install the printer drivers using the following commands:
+
+```bash
+wget https://download.brother.com/welcome/dlf006893/linux-brprinter-installer-2.2.2-2.gz
+gunzip linux-brprinter-installer-*.*.*-*.gz
+bash linux-brprinter-installer-*.*.*-* MFC-9010CN
+bash linux-brprinter-installer-*.*.*-* DCP-L2520DW
+```
+
+## Installation Instructions
+
+1. **Download the Tool** (linux-brprinter-installer-_._._-_.gz)
+   The tool will be downloaded to your default "Downloads" directory (e.g., `/home/(LoginName)/Downloads`).
+
+2. **Open a Terminal Window**
+
+3. **Navigate to the Download Directory**
+   Use the `cd` command to change to the directory where the file was downloaded.
+
+   ```bash
+   cd Downloads
+   ```
+
+4. **Extract the Downloaded File**
+   Uncompress the downloaded `.gz` file.
+
+   ```bash
+   gunzip linux-brprinter-installer-*.gz
+   ```
+
+5. **Gain Superuser Access**
+   Obtain superuser privileges using either the `su` or `sudo su` command.
+
+6. **Run the Installer**
+   Execute the installer script for your Brother printer model.
+
+   ```bash
+   bash linux-brprinter-installer-*-* Brother machine name
+   ```
+
+   Example:
+
+   ```bash
+   bash linux-brprinter-installer-2.1.1-1 MFC-J880DW
+   ```
+
+7. **Follow the Installation Prompts**
+   The driver installation process will begin. Follow the on-screen instructions.
+   When prompted with "Will you specify the DeviceURI?", select:
+
+   - **For USB Users**: Choose `N` (No)
+   - **For Network Users**: Choose `Y` (Yes) and provide the DeviceURI number
+
+   The installation process may take some time. Wait until it completes.