Hi
You can get the ISO file for Windows 10 here...
Windows 10 I suggest that once you have everything up and running you make a system image file.
I use EaseUS Todo backup and recovery.
It will make a boot disk that will boot your computer and recover it (from a backup file on your computer) to the way it was when you made the back up.
If you only have one hard drive you will need to create a partition on it, (using Disk Management) to save them to.
They can't be on the partition you are restoring.
I make a new backup once a month, it takes about 20 minutes.
It has saved me from a lot of pain on several occasions since I started beta testing Windows 10, and just the security of knowing that I can have everything back up and running in a half hour is worth the effort.
EaseUS Todo Backup - Data Backup and Recovery Software for PC/Laptop/Server. It is the easiest backup program to use that I've ever had, and it's free.
Just a few clicks to make a complete backup of your System.
Mike