My sympathies if you're new to all of this, a skin is just a wearable item in the game. It's something that's very common in free to play games where you can purchase 'skins' (items ) that can be equipped on a character to change their appearance and these can also be traded among players for real money as well if they want to buy it. They vary in rarity and it works a lot like trading cards etc. back in the day, this is just the digital equivalent.

My sympathies if you're new to all of this, a skin is just a wearable item in the game. It's something that's very common in free to play games where you can purchase 'skins' (items ) that can be equipped on a character and these can also be traded among players for real money as well if they want to buy it. They vary in rarity and it works a lot like trading cards etc. back in the day, this is just the digital equivalent.