To set up a Walrus node, you can follow these steps: 1.Start by downloading and installing the 'walrus' binary suitable for your operating system. If you're on macOS, Ubuntu, or Windows, binaries are available for each platform. You can install Walrus using a script: Open your terminal and run curl -sSf https://docs.wal.app/setup/walrus-install.sh | sh for a first-time Mainnet install, or use the -n testnet flag for the Testnet version. Make sure $HOME/.local/bin is in your $PATH to use the walrus command later. 2. For running a local testbed of Walrus, you need to clone the scripts/local-testbed.sh from the Walrus git repository and execute it on your machine. This script sets up a local configuration for running Walrus. If you are using Windows, download walrus.exe through PowerShell and place it in your PATH. The command is: (New-Object System.Net.WebClient).DownloadFile('https://storage.googleapis.com/mysten-walrus-binaries/walrus-testnet-latest-windows-x86_64.exe', 'walrus.exe').3. Once installed, you can verify your setup by running walrus --help which displays all available commands and options. Make sure you have all prerequisites as detailed in the setup documentation.