There are many places to learn snacks. There are many snacks now, and food squares, snack streets and food cities are all gathering places for snacks.
Mainly depends on what kind of form the subject wants to operate snacks. If you want to satisfy yourself, you can score seven or eight points by searching online. If you want to manage snacks, you must study hard. Personally, I think there are two kinds of snacks. The first kind is a roadside stall, which has no brand or storefront, but it tastes good. Of course, you can learn from the stall owner. If his booth needs to be filled, and you just catch up, you will save the tuition.
The second type is brand stores, which have fixed stalls or small shops and have a certain brand awareness. Most of these snacks are open to join, as long as you pay the joining fee, you can learn to open a shop.
The most important thing is to see how far you want to learn, just do it occasionally, learn to play, and watch video learning. There are many videos teaching cooking online now.