For advance users who want to display recent posts from a specific category, we have this article specially for you. Beginner users will most likely not use this. This tutorial is mostly used in creating magazine style themes.
have_posts()) : $catquery->the_post();
At the top where it says showpost= change the number to how many posts you want to display, and cat=3 is the id of the category, so change the ID of the category to pick which category will you be displaying.