A:AnswerMike, once you activate Office 365 Home, you no longer need the activation code. From that point on you'll install on new devices and share your subscription with others through your Microsoft Account. Simply log into the Microsoft Account that is connected to Office 365 Home on the new device at Office.com and you should see an install Office button in your account.
A:AnswerYou can purchase Office 365 and redeem it to your own Microsoft Account, and then log into that account with the Office apps you have on your device and it will sync them up to your Microsoft Account that has the purchase on it.
A:AnswerYes, you can. However for each installation after the first you don't use the product key, instead you log into Office.com, with the Microsoft account you redeemed Office 365 Home to, on the new device. Then click install Office.
A:AnswerNo, if you only want one user then Office 365 Personal will work for you since it allows you to install Office 365 on all your devices. Just note that for each installation after the first, you don't use the product key, instead, you log into Office.com with the Microsoft account you redeemed Office 365 Home to, on the new device. Then click install Office.
A:AnswerYes, it does. Once you redeem Office 365 Home to your Microsoft account you then will log into your account and share it with the people you choose by entering their email address. You can learn about the process here: https://aka.ms/AA4rino.
A:AnswerThis is for 6 different people, each of which can then install Office 365 Home on all of their devices. If you are one person with 6 devices then we recommend Office 365 Personal.
A:AnswerOffice 365 Home can be used both online and offline. However if your files are saved on the cloud, you won't be able to update them until you are back online.