Hints are helpful tips that will guide you towards the correct solution of the exercise. They imitate the help of the teacher who would "give you a nudge in the right direction".
You can request a hint by clicking on the "Hint" button under the exercise.
When you use a hint in an exercise, you won't receive any penalty points. If you resolve the exercise correctly, you will get the full points for it, and it will be marked green.
On the other hand, if you request the solution (via the "Solution" button), you won't get any points for that exercise, as the computer did it fully for you.
There are no downsides to using hints, so we encourage our students to use them whenever they need some help with the exercise.