I'm switching from Windows 10 to OS X or MacOS if they call it that since I'm getting a MBP. What are some major differences between OS X and Windows that I should know before moving? If I send a file from OS X to Windows or vice versa, will it be compatible? Are there things missing on OS X that Windows has? Also, does Apple allow you to download any file from a browser and launch it, or does it sometimes require you to trust it like iOS?