Wubi will let you install & run Linux Ubuntu dual-boot setup with Microsoft Windows easily. Read tutorial & download Wubi free.

While Ubuntu is free to install and use for individuals, organizations can pay for support and for a host of other Ubuntu-based products, such as server software.

Option 2: Install Ubuntu inside Windows This is the most convenient way to install a configurable version of Ubuntu and keep Windows.

There are other versions that I’ll recommend for specific jobs (such as diagnosing an unbootable PC), but for learning Linux and possibly using it for productive work, Ubuntu is the best choice ...