You may feel that not all the words provided in WordBanker English are worth learning in which case you can create your own list of "Favourite Words" and be testing only on them.
The words marked as favourites are just our suggestions as they are those most commonly found. You can select or deselect them as you choose by selecting "Manage sets" from the Main Menu. You can also either mark or unmark a word as favourite in "My Dictionary".
You can select whether or not to test yourself on all the words or just your favourites by selecting "Tools > Options" from the main menu and select the tab "Testing"