Take a look at the sticky in this very forum:
Using News Recipes: Start Here
Or the calibre manual (the section describing the User Interface):
http://manual.calibre-ebook.com/gui.html#fetch-news
Pocket is one of the
default recipes.
P.S. There is no need to ask the same question in multiple threads --
https://www.mobileread.com/forums/sho...33#post3196633