Arduino and, specifically, the ESP8226 (basically an Arduino+Wifi) and ESP32 (Arduino+Wifi+BT) development boards are a fantastic place to start!

For most hobbyist-level electronics, it’s just a matter of becoming familiar enough with using the Arduino IDE to flash your C(-like) code to your board, or using something like MicroPython, then following the wiring instructions freely available online for common parts like servos, LEDs, displays, etc. Every once in a while you may have to reach for something like a transistor, capacitor, or resistor, but those can also be learned in an afternoon.

Google really is your friend! I taught myself hobby electronics over 15 years ago using the same, and they still hold up!