Nectar is the equivalent of a frequent flyer scheme for Easyjet. Sign up with Nectar Adpoints (http://www.nectaradpoints.com/) and you will receive 250 free Nectar points (signing up to the Nectar scheme generally is covered here).
You can also earn additional Nectar points by viewing and answering questions on adverts. It appears you can get up to 250 Nectar points per week by viewing and rating adverts. Whether you do so is up to you, but the 250 free points for simply signing up are certainly worth the effort.
Don’t forget that if you are Malta-based and need a Nectar card, Maltapoints.com will send one to your Malta address for free.