You earn money by simply sharing experitour.com pages anywhere!
Facebook, Twitter, Instagram, Google plus, your own blog or website, flyers, etc!
Simply add your referral ID /ref/0 in the end of any url from experitour.com. Take a look at the following examples:

https://experitour.com/ref/0
https://experitour.com/listing-category/outdoor-activities/ref/0
https://experitour.com/listing-region/lisbon/ref/0

As soon as your visitors use any of these links, you will see statistics about it in this page and when they buy something during the next year, you earn money!