[Strilanc]

There's also drag-and-drop in-browser circuit simulators, which can be a bit more approachable than the quantum computing playground's scripting UI.

Davy Wybiral's simulator: http://www.davyw.com/quantum/

Quirk (my simulator): http://algorithmicassertions.com/quirk

Of course you'll still be lost if you have no context for what a quantum computer even is. For that there's the youtube series Quantum Computing for the Determined ( https://www.youtube.com/playlist?list=PL1826E60FD05B44E4 ). It's by the co-author of the de-facto textbook for the field, and done in a Khan Academy style.