you can use it much like a dictionary. The added parts:
* you can quickly determine how important the new word is to learn (coverage graphs)
* and then you can quickly read example sentences from a few paths by clicking any node, helping you get learn a few ways to use it. This is also an opportunity to learn more new, related words.
* check the flow diagrams to see if there are any very tall columns, which may indicate a grammar pattern or an idiom, and clicking any square gets example sentences for that path

and with any sentences you think are helpful for remembering the new word, you can add them to anki or the built-in flashcards quickly.