If you are interested in checking out the features of Windows 10 on Mac, here comes a working guide to Install Latest Windows 10 on Mac PC.
If you are interested in rooting your Galaxy Ace II e smartphone, follow the steps mentioned here, will help you Root Samsung Galaxy Ace II e SGH-T599V.
Microsoft released Windows 10 Technical Preview Build 9926 to Windows Insiders. Follow this post and install Windows 10 Technical Preview January Build 9926 on your PC
If you are on the brand new build of the Windows 10 January Technical Preview, follow the guide to Enable Hey Cortana on Windows 10 Preview and other stuffs