# Node Overview
Nodes are the building blocks of workflows in n8n. They are an entry point for retrieving data, a function to process data or an exit for sending data. The data process includes filtering, recomposing and changing data. There can be one or several nodes for your API, service or app. You can connect multiple nodes, which allows you to create simple and complex workflows with them intuitively.
# Where to go next?
- If you would like to learn the basics of nodes, head over to the Node Basics document.
- If you are looking to create your own node, head over to the Creating Nodes section.
- If you'd like to learn more about the different nodes in n8n, their functionalities and example usage, head over to the Nodes Library section.
- If you'd like to learn how to add the credentials for the different nodes, head over to the Credentials section.