Type the word 'wrong' in the white empty box and press enter. This should take you to another explanation page.
On the this page, you have to click the image. This will take you back to the first page again.
Type the word 'right' in the white empty box and press enter.
This then takes you to the first level. It's not the pool one as I'd said earlier, it's a picture of a man running, but the clue is in what's written (on this level) - these missing words are the answer and you type these in the white empty box and press enter - it will either take you to the next level or you'll get an error code and you have to try again.
Hope this helps.