The test includes a mixture of statements relating to areas such as lexis (vocabulary), structures, tenses, grammar.
The statements are in plain English as far as possible. The test works best for learners of European languages. Skip items that do not apply to the language you wish to learn.
As you work through, the statements refer to higher and higher levels of skill/knowledge.
When you feel you can no longer honestly tick the boxes, stop, and go to the bottom to submit your score. But don’t stop on the first statement for which you cannot tick the box – it may just be a “gap” in your ability.