I have started cooking celery more often since I came to the States.
When I uploaded celery recipes, people sometimes commented that de-stringing celery is troublesome, so I uploaded this method to teach you how to de-string it easily.

As long as you pull down the leaves slowly, the strings will come off easily.
The key is de-stringing from the top to the bottom. If you do it in a wrong direction, they will rip halfway through. Recipe by Nanami Haruka