Howdy! To run an Avalanche node, you can follow these general steps:
Set up the environment;
Get the Avalanche source code;
Build the Avalanche node;
Configure the Avalanche node;
Start the Avalanche node;
Monitor and interact with the Avalanche node.
However, this is only a minimum of information. In my opinion, you should take a look at this article on how to run avalanche node which will give you much more information about it. I hope my answer will help you!