Pick a goal first: "I want to write an operating system" "I want to write a video game" "I want to write a raytracer" "I want to write new firmware for my T

Pick a goal first: "I want to write an operating system" "I want to write a video game" "I want to write a raytracer" "I want to write new firmware for my TV" Then do it, learning what you need along the way. Forget "CS", just do it.