Most of your interaction with your computer is via the Desktop Environment. Which is Gnome in a default Ubuntu installation. If you're not particularly intere

Most of your interaction with your computer is via the Desktop Environment. Which is Gnome in a default Ubuntu installation. If you're not particularly interested in exploring alternate operating system philosophies, I'd recommend looking into other Desktop Environments to use on Ubuntu. In particular, I'd recommend XFCE or Mate since they behave conventionally. One thing to understand when moving from a proprietary to an open source OS is how much control you have over the system. Just about any part of it can be disabled or upgraded or swapped out for something different. If you learn where the seams are and how the different pieces work together, it gives you far greater control over your computer than any proprietary OS. If you expect everything to just work, you may be setting yourself up for disappointment.