Install Ubuntu 14.04 on VirtualBox

Execute VirtualBox

New
(Click image to view)

=>

Name: RailsPlayground
Type: Linux
Version: Ubuntu (32 bit)
Next

=>

Memory Size: 2048 MB
Next

=>

Create a virtual hard drive now
Create

=>

Hard drive file type: VDI
Next

=>

Storage on physical hard drive: Fixed size
Next

=>

File location and size
Change size to 16GB
Create

=>

VM created

=>

Settings

=>
Network - Adapter 1 - Bridged Adapter
Select Adapter as needed

=>

Storage - Controller IDE
Choose .iso file as needed
OK

=>

Start

=>

Ubuntu screen appeared
Select language, click Install Ubuntu

=>

Check Download updates while installing
Continue

=>

Install Now
(...)
Install Finished
Click Restart Now

=>

Close VM
=>
Start it again
Done