I've used a lot of them, I've used various boards in education. Few alternatives offer as mature and smooth experience that Arduino (AVR) boards do. That's not

I've used a lot of them, I've used various boards in education. Few alternatives offer as mature and smooth experience that Arduino (AVR) boards do. That's not to say there aren't some great ones out there, but any stumbling stones as a beginner might as well be cliffs.