Why Debian? Because Debian is a popular Linux distribution vendor and has small install image file. I’ve tried to install Debian with Virtual PC, VirtualBox and VMWare and have different results on different PC. More here
Installing Linux is not a complex task, you only need to follow some instructions and have basic understanding of how computer software and hardware work. Also you should be ready that documentation will be different from what you already might have seen. It means that it may be less colorful, more technical, and have different terminology. That’s Ok. What you need is only to follow the doc and try to understand it – like thousands of people.