Generally, I would say don’t upgrade until the product has been around for 6 months, so that all the worst bugs are resolved and missing hardware drivers are available. You could still register for the free upgrade if you are getting a message on boot up about it, just enter you email address.Â Free upgrade until 29 July 2016,Â so plenty of time.
If you really, really want to upgrade now, I would suggest:
– If you currently on Windows 7, 8 or 8.1 you could upgrade and mostly everything would work, although you might want to download Startmenu8 or StartIsBack to give you a normal start menu. You can always rollback, if there were no install errors.
– If you have Windows XP you might just want to upgrade to Vista which is still supported until 2017, or Windows 7 Home Premium (Â£80 on Amazon). There’s an unlocked version of Vista floating around.
– If you have Vista then I would stick with that or install the free Windows 10 Technical Preview which allows you to upgrade and keep upgrading with latest updates.
Note, Windows 10 will be Â£80 for Home and Â£130 for Pro after the Get Windows 10 program has finished. You may also have to pay a yearly subscription in the future*, or get it free via Office 365.
* Rumoured on the Internet. Microsoft are vaguely following Apple’s pricing model and upgrade strategy, but they don’t have as much hardware for sale as Apple so that could change. I think they will have to start charging subscriptions in 2 – 3 years, unless everybody starts buying Windows phones and tablets, which is obviously their ultimate goal for Windows 10.