How is it most effective for a Swift beginner to study?

Since you have programming experience and basic knowledge, if you don't feel pressured to read English

If you look at Apple's official Swift language guide, you will study the language itself and I don't think there's a better document.

https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language

If you are focusing on iOS Development with Swift, I recommend Raywenderlich Tutorials.

https://www.raywenderlich.com/category/swift

If you want to learn lightly to taste, I recommend the Swift course at CodeSchool.

https://www.codeschool.com/courses/app-evolution-with-swift

In addition, the famous Stanford iOS Course (http://web.stanford.edu/class/cs193p), Coursera, Udacity also offers quality Swift video lectures.

If you want to create an iOS app, I recommend Swift, but if you don't have an iPhone or a MacBook, I don't recommend it. To study app development, it should be fun to upload it on your phone and do various tests, but if you don't, you'll lose interest.There seems to be a web framework in addition to the iOS app, but I think it's still minor.

There is a Korean iOS Swift lecture coming out soon. If you go to http://tryhelloworld.co.kr/courses, the iOS Swift introduction class is still being prepared. It will open early next week.