Installing a Lightning node on a Raspberry Pi is a relatively simple process, but it does require some basic technical knowledge. The following are general steps for installing a Lightning node on a Raspberry Pi:

Make sure you have a Raspberry Pi with an operating system installed (Raspbian recommended) and connected to the internet.

Open a terminal on your Raspberry Pi and enter the following command to install the necessary dependencies:
sudo apt-get install -y git build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils python3 libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev

Download the Lightning node source code with the following command:
git clone https://github.com/ElementsProject/lightning

Access the Lightning node source code directory with the following command:
cd lightning

Run the configuration script with the following command:
./configure

Compile and install the Lightning node with the following commands:
make
sudo make install

Start your Lightning node with the following command:
lightningd

You can use the "lightning-cli" command to interact with your Lightning node, for example to view its status or connect to other nodes.

Keep in mind that this process can take several hours depending on the speed of your Raspberry Pi and your internet connection. Additionally, it is important to always keep your node updated with the latest Lightning software versions