Setup
Visual Studio 2019 (Community Edition is fine. My understanding is that VS 2022 will also work, but installing MonoGame involves jumping through extra hoops. Also, Microsoft has promised to support the 2019 version until 2029.)
Tutorials
C# Monogame RPG Made Easy: YouTube videos & GitHub repo - CodingMadeEasy
MonoGame Tutorial Series - GameFromScratch.com
Tiled Map Editor Tutorial Series - GameFromScratch.com
More tutorials on C#, F#, XNA, and MonoGame here
Tools + Other Resources
Blender 3D Modeling Software
The box of evil is a small collection of textures and effects provided to fellow game developers for free and without any restriction. Remember that this is really old, low resolution stuff, and it’s provided as it is.
[A] simple way to find and share indie games online for free.
Extensions to make MonoGame more awesome
Retro Sprite Creator - Nihey Takizawa
SonarLint extension for VS Code 2019
Tiled Map Editor