I personally run Kubuntu here. I find it amazing out of the box, and more intuitive for me personally, than straight Ubuntu. Kubuntu is the "KDE" (K Desktop Environment, now called Plasma) flavour of Ubuntu.

The 24.04 version is the 10-year long-term support (LTS) release. The next one of those will be 26.04. The numbers are simply the year (24 == 2024) and month (.04 == April) of initial release.

Cheers