Windows 10: How can I install virtual machines for Windows 7/8/8.1?

I'd like to install virtual machines for Windows 7/8/8.1 and Linux on my Windows PC. I have no idea how to do this. I heard Oracle VirtualBox is the best for this. Do I need actual Windows 7/8 licences (which I don't have)? I want it just for computer learning, such as practicing networking commands for COMPTIA Network+, checking the menus and options and other learning, nothing heavy.

Any advice much welcome

:)

 

Windows 8 rollback to 7 or XP

I've stepped back to 7 from 8 there are more and better drivers for 7 .and its close enough to 7 in use she'd like it

 

Survey Reveals Companies' Early Windows 8 Reactions and Plans

Bull fucking shit.

 

Windows 7 Lover's Club: For Those Who Like Windows 7 As Opposed To Windows 8

Description:

• For anyone who likes Windows 7 as opposed to Windows 8 and wants to keep Windows 7 and not upgrade to Windows 8.
• Also for anyone who does not hate Windows 8 but refuses to upgrade because Windows 7 is perfect.

Requirements:

• Be human. Male or female will suffice.
• Love or Like Windows 7 much more than Windows 8.

To Join:

• Make a post.

Benefits:

• You will find true love one day.
• You have have a chance to get rich one day.
• You will have a chance for your dreams to come true one day.