If you're going with software eurorack emulations as a didactic tool, VCV rack should be pointed out, too. The standalone version is open source: https://vcvrac

If you're going with software eurorack emulations as a didactic tool, VCV rack should be pointed out, too. The standalone version is open source: https://vcvrack.com https://vcvrack.com The basic modules that are included let you form the core of subtractive synthesis. Having them available as isolated, wired up building blocks is a very visual help in understanding how they relate.