Ubuntu - a community developed, Linux-based operating system that is ideal for use on personal computers, laptops and servers. It contains all the essential tools you need: Viewer Internet, office suite for word processing, spreadsheets and presentations, programs for communication on the Internet and many others.
Operating systems based on Linux kernel are very stable, so the system requires a rearrangement is very rare. Various images from the LiveCD handy to satisfy curiosity, to restore the installed systems and so on, but for myself many experienced linuksoydy prefer the network, having the possibility to choose only the packages you really need them. To do this, there are minimum installation images Netboot, equipped text intallyatorom Debian Installer. Such images do not weigh more than 20 megabytes.

Installation of a system with an image Netboot is the same as installing from CD Ubuntu Alternate, only the packages will be downloaded from the network, and not from the disk. After the base system is proposed to choose to install the recommended set of packages such as ubuntu-desktop, ubuntu-server, kubuntu-desktop, and so on. At the end of the list, there is an item Manual Package Selection. This allows you to run aptitude and invited to choose the packages to install. After that they will be implemented on a network installation with a pre-selected a mirror, and then will install the boot loader GRUB. Because of this you will always have the latest software version at the time of installation. Not recommended for installation over the network if you have a slow internet.

Minimum system requirements:
CPU: Pentium IV 3GHz
Memory: 1Gb
Video card: 512Mb

Recommended system requirements:
CPU: Core 2 Duo 2.2Ghz or higher
RAM: 2Gb
Video Card: 1Gb