# Getting started

Update and upgrade, then reboot to apply system and kernel updates.

---

1.  ## Update and upgrade

    Fetch the latest package lists and apply security patches.

    ```sh
    sudo apt update && sudo apt upgrade -y
    ```

2.  ## Reboot

    Apply kernel updates and restart services to ensure a clean state.

    ```sh
    sudo reboot
    ```

3.  ## Install extension manager

    Install GNOME Extension Manager to browse, install and configure GNOME Shell extensions.

    ```sh
    sudo apt install -y gnome-shell-extension-manager
    ```

4.  ## Launch extension manager

    Open Extension Manager from the applications menu or launch it from the terminal.

    ```sh
    extension-manager
    ```

5.  ## Install and configure Deja Window
    - Open the **Browse** tab and search for `Deja Window` by _mcastaldo_.
    - Install the extension, then open the **Installed** tab.
    - Click the settings icon next to **Deja Window**.
    - Under **Global Defaults**, toggle **Enabled** and then click **Restore**.
    - Enable `Size`, `Position` and `Avoid Overlap for Additional Windows`. Leave all other options disabled.