Cinnamon @ Linux Guide:

Made by the Team behind Linux Mint. It is a folk of GNOME but heavily modified for ease of use and to be more like Windows. So linux newbies can move from Windows to Linux with the UI not changing in a drastic way. GitHub Repo

Panel

Its "Panel". The Taskbar at the bottom is very much Windows like and thats on purpose for newbies and its userbase. Newbies can then have some simialr things for UI/UX.

Spices

Spices are Cinnamon's version of Themes. You can find the repo by Clicking Here