Plug in a USB flash drive (at least 4-8 GB of space) with your PC.

Install a USB bootable creation software (such as Rufus) on your Windows PC.

Download the Ubuntu 14.04 ISO image file from the download section.Installation instructions Starting installer in PC (via USB) Originally, the operating system was made for personal computers, currently the desktop version of Ubuntu comes with usefull free software applications, such as LibreOffice (Office software), Thunderbird (email client), Firefox (web browser), Media player, Photo management app, while more applications can be installed from Ubuntu Software Center. At present, there are four different versions of the operating system, which are Ubuntu Desktop (for personal computers), Ubuntu Server (for servers), Ubuntu for IoT, and Ubuntu Cloud (for cloud computing). Ubuntu is a free and open source Linux operating system (currently the most popular Linux distribution) installed on over 40 million personal computers, and is installed on a large number of servers around the world. Compared to previous releases, this Ubuntu version includes many new features and updates, such as GNOME 3.10, Linux kernel 4.4, Upstart 1.12.1, LibreOffice 4.2.8, Python 3.4, number of new features in AppArmor, Oxide (Web engine library based on Chromium), redesign of Startup Disk Creator, cleaner design, better performance etc. Ubuntu 14.04 is available to install 32-bit (x86) and 64-bit (x86-64) versions, and it also supports smartphones, tablets, TVs and smart screen devices.

Ubuntu 14.04 (Trusty Tahr) was released on April 17, 2014, the fourth long-term support (LTS) release of the Ubuntu, it was preceded by V 13.10 and was available for desktop computers and servers.

How to download ubuntu 14.04