Once you start using Google Now you’ll find that after a while it will begin to populate the interface with cards – these could be for weather, travel, news, you name it. However, keep an eye on the interface as it will sporadically ask you if the cards are useful, for which you can answer ‘Yes’ or ‘No’.
Alternatively you can swipe cards to the right to remove them or tap the dotted Menu icon on the card itself to answer a few questions related to the card. Likewise, tap the wand symbol at the base and head to ‘Everything else’. From here you get every card that has ever been listed and this allows you to configure the cards to adjust how they behave.
All of this effort is worth the time because it helps Google Now learn what you like and don’t like!