If you are working on wordpress custom theme and you want to include categories that you created and customize it someway that you prefer, here is how.
wordpress itself has a Template Tag of calling all the categories.
you can also do an array inside category to customize the way you want.
$args = array(
‘title_li’ => __( ‘Categories’ ), // this allow you the change the title of this category.
‘show_count’ => 1 //to show the amount post of this category, use 0 to hide
note that there are a few choice you can set in this array, you can read more on