Here are some websites that I visit daily. It's really great for getting rid of some free time and you'll learn something new every day. Best of all they are simple, educational, and free.
Freerice has many topics to choose from and for each answer you get correct Freerice will donate 10 pieces of rice to help fight wolrd hunger! You can also sign up to keep track of how much rice you have donated a month and join groups.
Both of these websites offer daily trivia questions on cats and dogs. If you answer the trivia correctly Freekibble will donate 10 pieces of cat or dog food to local shelters in need. Don't worry if you answer incorrectly. They will still donate 10 pieces of kibble!