iTunes and iCloud experiencing outages
The good news is that Apple seems to be aware of the problem and is working to resolve it. Right now, it isn't clear exactly how many users are affected by the issue, or which users, so you might as well have absolutely no problem using the services. If, however, you do have some of these problems and you don't feel like checking if it's been fixed every now and then, you can simply open the source link below - that's where you can see the status of Apple's various services.
source: Apple via SlashGear