-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Note that you'll need a Godot version built with the module. If you don't want to build it yourself, you can download a build artifact (fancy GitHub word for the result of running some automated task, the result in this case being an exe of Godot with the module built in) from the GitHub actions here (assuming you're on Windows)
To be honest though, Zy's module is going to be rough for you if you are averse to written documentation + code samples + experimentation, since that's kind of the best option for learning it at the moment. For an integrated character controller, dig into the blocky game example here. Specifically this script.
Making a background have a color as similar as the terrain helps a lot against this kind of issue. Also try resizing meshes to be slightly larger than they should otherwise be: https://github.com/godotengine/godot/issues/35067
On marching cubes, there is the original paper you could read up on if you prefer reading or a wonderful video by Sebastian Lague about the process. Sebastian also has a GitHub page with his completed project, though it is made with Unity, so you'd have to port it over.