You can create a node by clicking the wheel where you want.
You can move the node by holding the top of the node and dragging it.
You can connect two nodes by clicking the desired node and then right-clicking another node.
You can disconnect nodes by right-clicking the arrow.
You can move the screen by left-clicking and dragging an empty space on the screen.
You can zoom in and out of the screen by pressing Ctrl+mouse wheel.
You can change the node type by clicking the box at the top of the node or the inspector on the left side of the screen.
You can enter content through the large box in the center of the node or the inspector on the left side of the screen.
You can zoom in or out of the node by holding the outer part of the node and dragging it.