... thing I got here is Win10. And it was free... I dunno if the store is worth using, guess just not for me. But if to say about the store - its navigation is quite convenient and intuitive - good design.
I used Norton(who didnt, eh?) for some time, and I assume this is not the best option you can get for your pc. It constantly went for some errors and attempted to delete the files I prohibited him to delete multiple times... Controversial experience.