Pin to Pin Connection
The most common method of connecting nodes together is through Pin to Pin connection.
Using the Left Mouse Button, drag from one pin onto another compatible pin.
A green check mark will appear when hovering over a compatible pin.
When attempting to connect two non-compatible pins, an icon will appear along with the reason why you cannot connect the nodes.
Typically pins are color coded to reflect the type of connection they take in.
There are instances where you can connect two different pin types together, in which case a Conversion Node is created.
Above we have taken a Float output and connected it to a String input. You can see it will convert via the tool tip.
After connecting, a new conversion node is added between the two pins.
If you drag off a pin into an empty space in the graph, you can place a new node.
When releasing the Left Mouse Button, the context menu will appear.
After selecting a node to place, the nodes will automatically become connected.
You can also take an existing connection and connect it to another compatible pin.
In the example image above, holding Control and clicking on a pin and dragging to another input...
This will allow you to move the connection from one pin to another without having to re-wire it.