Please Any One Can Help Me About Courses on Swift ?

There are indeed two separate Swift tracks on Treehouse. The Swift 2.0 track uses the latest version of Swift and Xcode 7. The older Swift courses are still valid, and when possible, the instructors will note when things have changed for newer versions of Xcode. It is possible to go through all the older Swift courses using the latest Xcode, but there will be times that it won't work because of changes in Swift, so be cautious.

Lastly, there are also courses in iOS using Objective-C. Objective-C is the language originally used to build iOS and OS X apps. Although Swift is the brand new language for iOS development, the vast majority of iOS and OS X apps are still built using Objective-C, so it is definitely a benefit to know both. My one caution with using the Objective-C courses is that they may or may not have been updated recently. While the Objective-C language itself hasn't changed very much since Swift was introduced, there is still the possibility that some of the material is a little outdated and may not work exactly as instructed, so again, be cautious.

My advice for you, if you are brand new to iOS development, is to stick with the Swift 2.0 courses for now. Once you feel confident with Swift 2.0, there are definitely some benefits to looking at the older Swift courses. Pasan did two excellent courses surrounding a Weather app that were fantastic!