This content has been automatically translated from Ukrainian.
To use — is a slang word that has come to us from the English “use”, which means “to utilize”. So when they say “to use this”, they mean to utilize something, usually in the context of programs, applications, or technologies. This is typical language of youth and internet communities, where they often like to shorten or alter English words.
And now an example: a friend tells you that he opened a new drawing application. You can ask: “And how to use it?” Here you are simply asking how to utilize it. Yes, it may sound a bit unusual at first, but this approach creates a sense of belonging to a certain “internet culture”.