Installing VirtualBox (Bin Package)

Go to

https://www.virtualbox.org/wiki/Linux_Downloads

download "All distributions" (runs a bin installer)

$ sudo sh VirtualBox-VERSION-SYSTEM.run

After installing, go to https://www.virtualbox.org/wiki/Downloads

then click on "VirtualBox 4.3.2 Oracle VM VirtualBox Extension Pack"

choose open download directly on VirtualBox


To make VM fit on host screen etc:
running VM > devices > insert guest additions cd image
execute cd installer via SO


To update/upgrade VirtualBox, just make the same process; you'll need to reinstall Extension Pack