Comment by kypro

There's 3 core parts:

- Electronics (batteries, resistors, capacitors, etc) - Robotic hardware (motors, sensors, microcontrollers, etc) - Software

The electronics learning is always going to apply to start there if you need to, then depending on your goals the hardware and software will vary.

For simple DIY projects I'd start with getting an Arduino or Arduino compatible board and just play around with building things with sensors, LEDs, motors, etc. You'll find lots of kits and resources online for simple Arduino projects.

More complex projects are probably going to need to be Linux-based (AI, machine vision, etc). In which case you might want to look at building something with a mini PC, Raspberry Pi, NVIDIA Jetson.

These days robotics is super accessible, but can cost a bit depending on what you want to do... That said, most of the time you'll find there are cheap ways to build POCs to validate your ideas first.