Fill the box with the text you want to appear in the node, then use the Literal or Resource buttons for a rectangle or an Ellipse, then drag the created node to where you want it. To connect two nodes, you again enter the text in the box and shift + click the from node then shift+click the too node. This is all extremely slow at the moment, so to look at what a completed graph might look like, there is an for you.
To view the triples of the graph - use the Triples button to get them listed below the graph.
Comments to email@example.com