Basic Ubuntu install in VirtualBox, login, enable superuser (root), put Terminal shortcut on desktop, install a perl module from cpan, reboot/shutdown, unmount ubuntu install iso image, mount GuestAdditions, boot
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https://www.youtube.com/watch?v=RGfIZSkYhV4
How to install Unix on a PC for beginners. Learn Unix today without the need for a new PC, operating system install or an expensive Mac. Installing cygwin in minutes
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https://www.youtube.com/watch?v=tjnVRuLwFt4
Using the gzip command in unix to compress files. Using gzip along with the tar command to archive and compress a directory in one singe command.
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https://www.youtube.com/watch?v=A1V5pVo14RA
Use the curl command on unix based operating systems to grab web pages off the internet and save them on your local computer. You can use curl to download files using any popular protocol such as http https ftp etc.
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https://www.youtube.com/watch?v=VMJi7GIsYVg