Note: This tutorial's a bit old and kind of fast [cut out any empty space to keep file sizes small] ( pause video as needed )...
Part1:
Setting up monogame, content and trying out some parallax scrolling (layered backgrounds with different scroll speeds).
Setting up to use monogame framework may change a tiny bit over time [but only a tiny tiny bit]. (If using Linux - see my Linux tutorial).
On Windows 10/11, you'll need Visual Studio 2022 and load monogame extensions to get templates (see monogame.net getting started stuff)