Nhấp chuột vào trình đơn Apple. Nhấp chuột vào System Preferences (Tùy chỉnh Hệ thống). Nhấp chuột vào iCloud. Tích vào hộp thoại bên cạnh "iCloud Drive". Chọn kiểu dữ liệu đồng bộ với iCloud.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
It's the icon in the upper-left corner of your screen. It's in the second section of the drop-down menu. It's on the left side of the window. If you're not automatically logged in, enter your Apple ID and password. " It's at the top of the right pane. Now you can access and edit files and documents on iCloud.  Do so by choosing "iCloud Drive" in any "Save" dialog box or dragging files to iCloud Drive in the left pane of a Finder window. Select which apps have permission to access iCloud Drive by