As a blogger, the coins are generated through the blog and earned after completing certain tasks like the Daily Challenge, which Sara will ask you to do.
To collect the coins, just go to your tablet and select “tap to collect” on your blog. If you want to collect the coins from the Daily Challenge, make sure that you have cooked all the dishes that Sara has requested and then push the “collect” button. The Daily Challenge is also located on your tablet, in the upper, left corner.
You can also earn coins after you’ve completed a dinner party. If you want the coins right away, you can always visit the shop to obtain something else by purchasing the starter pack. For example, coins can be used to decorate your table to make it look super cute for your guests or for food bags that will make your dish somewhat more special.