First Download the desired Android ISO from (latest stable release is better)
Installing Android in PC — As an OS
Burn the downloaded image to CD/DVD
Insert this CD/DVD into the drive and reboot the computer
Configure the system BIOS to Boot from the CD/DVD rom
Choose to Live CD or Install the Operating System.
Warning: Instalation of Android will erase all data on your hardisk.
Installing Android in PC — Virtualbox
Create a new VirtualMachine in Virtual Box with the following configuration:
Give it a name of your choice,
select “Linux” for the operating system
and “Linux 2.6″ for the version.
When prompted for the base memory RAM size you can enter 256MB (512MB is recommended).
Installed in Virtualbox & PC:
Some Useful Shortcuts for Android:
Arrows – navigation
Enter – confirm
Left Windows key – home
Escape – back
Menu or popup key (next to right Windows key) – application menu
ctrl + F1 – Console mode
ctrl + F7 – Graphical mode
USB Mouse and USB Keyboard Works without any problems for versions 2.0 (I have not tested for older releases may work as well) and above.