My older brother introduced me to linux and android custom roms when I was like 11. So I flashed my old sony Ericson phone with custom roms from xda and tried Ubuntu live CDs on my mother's old 40gb hdd laptop.
But my introduction to programming was when I saw some videos about the raspberry pi on YouTube.
I was like 14 and programmed basic scripts for my raspberry pi in nano over putty or notepad++.
At first I didn't even knew to intendent but in the process of my first project (Python sunrise alarm clock with tts) I learned many valuable things about Python and Linux/Debian.
The years after that I learned more with my now multiple RaspberryPIs, Arduinos and other hardware.
So in conclusion RaspberryPIs, the diy/open source community and especially my brother introduced me to programming.
I am now doing bigger projects with my brother and have (really basic) knowledge of java,Javascript,php,html,Arduino/C++ and Python.