Generally speaking, the version of Ubuntu you download and install is the same version that is shipped with your computer hardware. If you have an ARM computer, you'll likely be using an ARM-based version of Ubuntu.
Ubuntu 18.04 LTS is codenamed Bionic Beaver and has a 2,179 MB ISO file. I downloaded that one. You can download the 64-bit ISO here. Like its predecessor, Ubuntu 18.10 has no systemd. It uses the Upstart init system instead. This is a big deal for a few reasons: Ubuntu's init system is faster than systemd, Upstart is not bloated, and there are significant advantages to being able to easily replace it with another init system like OpenRC, for example. If you are setting up a Linux server, you can install Ubuntu 18.10. You can also install Ubuntu 18.10 on a live USB thumb drive (USB Type-C or USB Type-A, 8GB or more recommended) with a few keystrokes. Ubuntu 18.10 is mostly the same as Ubuntu 18.04 LTS, with a few new features.
Free software: The Ubuntu community does not have a specific approach to software licensing. It is based on a philosophy that allows the user to use the software in a variety of ways.
Ubuntu's software distribution model is unique. Most people on the internet download a torrent of software, such as software from the Ubuntu Software Center, which makes installing software much easier and faster. But there's also a package system that makes installing, updating, and removing applications easy. The Software Center can be a bit limiting, however.
Lag-free playing of games like Borderlands 2 and Kerbal Space Program. Both games have problems with frame rates on Windows. I don't know if these issues are related, but they are very common for new users of Ubuntu.
Microsoft Office 2010 is the current version of Microsoft Office, being the tenth major release of the application. Version 2010 includes an updated look and feel, improved security, improved compatibility with other Microsoft products, and new features. It was released on January 14, 2009. 827ec27edc