What can be tested ?

• Fetching pages: type in a URL.
• Check if the HTML is correct.
• Check if elements of a page are in place.
• Follow links.
• Click on the link to the registration form,
• Fill in the fields (you'll have to play with this and fill in the fields with good values, bad values, find the edge cases etc.)
• White box: Check if the changes also took place in the backend. (e.g. in the database.)
• Check if you get back the correct response page.
• ...