How to displace the camera:
For rotating the camera, you can use the mouse dragging and the wheel to zoom in and zoom out.
How to search for nodes:
You can make right-click on the left canvas and a list will appear.
Or make a double click and a search bar will be displayed.
How to find node information:
If you make a double click on the node, a panel will appear with a description and information about his properties.