I’ve been slowly working on https://ultimateelectronicsbook.com/ https://ultimateelectronicsbook.com/ — lots more to write, though! Includes interactive circui

I’ve been slowly working on https://ultimateelectronicsbook.com/ https://ultimateelectronicsbook.com/ — lots more to write, though! Includes interactive circuit simulations powered by CircuitLab https://www.circuitlab.com/ https://www.circuitlab.com/ which runs in browser. And yes, the vast majority of our users are on laptop/desktop, not mobile/tablet. I don’t think engineering/design/simulation is moving to a phone form factor anytime soon :) I’d still really recommend getting your hands dirty, getting off the simulator and go build something in the real world. Even if you don’t have an oscilloscope to start, just a solderless breadboard, a pack of resistors, maybe some switches and potentiometers and transistors and LEDs, and a few multimeters, and you can probably accomplish quite a bit of hands-on learning.