Linux is a great OS for anyone. There are distros for people who want to get in and muck around and there are distros for people who don't, and everything in between. You do not have to delete Windows to check it out. To just test it, you can install it to a pen drive or CD and boot to them, not even touching your hard drive. You can boot to Linux and use a partition manager, that comes with it, and resize your Windows partition to make room for Linux, then install Linux in the free space. This is what dual boot is. You can boot to your new Linux OS or your pre-existing Windows. All you do is select which one during bootup from a menu that Linux automatically creates for you. Linux is much more secure than Windows or Android.