There is no better way to master robotics than building and programming your own robots. Desert Eye is a Raspberry Pi powered tactical robot that can traverse desert environments. It can capture video of enemy locations with its forward facing night vision camera. It transmits video to a VR headset over WiFi.
To build this robot, you are going to need a Raspberry Pi 4, heavy duty motors, 18650 batteries, WiFi antenna, and other simple components. You will also need to be comfortable with 3D design and printing.