Download The Windows 10 Technical Preview Build 9926 Iso
The ISO image is available in over 20 languages and is free to download. The 64-bit file is close to 4 GB (3.92) and the 32-bit version is just over 3GB (3.01). With the ISO image you can burn a DVD or create a bootable flash drive to install it on a physical machine. My favorite tool for creating a Windows 10 bootable flash drive is a free utility called Rufus, which you can read how to do here....