Now, you can go ahead and start using Debian. If you want to install Debian on VirtualBox, you need Debian’s ISO file and Oracle VirtualBox. Once you have that, create a virtual machine suitable ...
For those that are using Oracle VirtualBox, which is free, some people forget to install the Guest Additions, which installs drivers to make navigating inside the VM much more pleasant.
There's no need for Guest Additions to copy text between host and guest machines in VirtualBox. To enable copying and pasting, power off the virtual machine, then go to Settings > General > Advanced.