I'll jump in and say that Codecademy is great. They have a Python track. It's free and interactive.
awesome! turns out codecademy has in addition ruby! http://www.codecademy.com/tracks/ruby
Yeah, man. I love Codecademy. If you wanna try out VILT I'd suggest Udacity.com or KahnAcademy.org (some people prefer that format). For straight C look towards computerscienceforeveryone.com.
Actually computerscienceforeveryone also has awesome low level basics about binary, ram, pointers, and memory management.
Sorry if any of this doesn't make sense. I'll blame it on 1) it being early, 2) typing on iPhone, and 3) likely autocorrected hilariously.
Edits: for clarity?
What is VILT? I'm not a huge fan of watching videos (like on KhanAcademy) because I can read much faster than the person in the video can speak. Is there an online repl-tutorial for C?
Yeah, videos for learning aren't my thing. I get terribly impatient, begging, figuratively, for the speaker to speed up and get to the point. Haha, I remember in English class last year, we read a book out loud, a paragraph at a time. It was achingly slow because, for whatever reason, my peers can't read or something...so I ignored everyone else and reread the book every period :).
after a debilitating attempt at learning js with web3schools (::grimace::), I learned js from codecademy. I'll give python there a chance, thanks!