When you start you will see three boxes and a word. Decide if the word is a NOUN or a VERB; or BOTH a noun and a verb.
Then click the box it belongs in. If you are right, the word will go into its box. If you are wrong, it will just vanish. Then you will see an example of how to use the word, and the next word.

Choose your level

Level 1 Has quite easy words.
Level 2 Is harder
Level 3 Is for people who have good English