You will learn how to install Xfce desktop on Ubuntu. You will also learn how to convert your Ubuntu desktop into Xubuntu desktop. Yes, there is a difference between installing Xfce and Xubuntu desktop.
If you want a smart speaker cum virtual assistant like Amazon Echo and Google Home that does not spy on you, Mycroft Mark II is what you are looking for. The open source device is open for pre-order via its crowdfunding campaign.
How much should be the swap size? Should the swap be double of the RAM size or should it be half of the RAM size? Do I need swap at all if my system has got several GBs of RAM?
Linux Kernel 4.15 release has been delayed because Intel has not yet provided a proper fix for the nasty CPU bugs. And that has made Linus Torvalds go into swearing mode, again.
Brief: For years Google used Goobuntu, an in-house, Ubuntu-based operating system. Goobuntu is now being replaced by gLinux, which is based on Debian Testing.