CRUD API from article I would like to create 4 api calls (GET/POST/PUT/DELETE) for the basic node article. I'm a real noob in this. Can someone help me on my way? Where do I go for information?
You will need the Services module, together with the REST Server submodule.

The two will allow you to create a new "server" and configure which entities can be retrieved via REST, what the authentication should be and which exactly calls are allowed (get, post, delete, etc.).