Enough, Swift is just syntactic sugar, frameworks (including Cocoa) and everything else remains from Objective-C, no new libraries in Swift is not there, or almost there, so it is no problem to translate the code back and forth.
Information in Russian is not enough, but for other languages too, but people learn, you just have to understand that "talk is worth nothing, show me the code" (c)
Look for the code as well as tutorials (preferably video) that shows how to work with the IDE, there is need to see where and what to click, what to drag, because in Xcode, this is a problem, and not intuitive, even here vast experience in other IDE helps a little, the Interface Builder in Xcode - it's just something "not of this world".
In any case, English is necessary, even the Russian developers when writing libraries use English.
To explore swift come in handy portla type swiftbook.ru and all the lessons on YouTube.
All the most popular libraries you can look at the website cocoapods.com and use the libs from obj-c.
That you yourself asked and answered? Maybe other questions, too, the answer will come up, then why me? - mazie.Towne commented on July 9th 19 at 13:11