Announcement: Last update 6th March 2016
Read I spent $110,000 on grad school, only to realize that the free online resources were actually better - Robb.
Read How I wasted two years of my life trying to learn web development before discovering Free Code Camp - Sophanarith Sol.
Listen to Mr Quincy Larson's podcast on FreeCodeCamp.
If you just browse through the important, systematic road map guide, you will see actually see how comprehensive or intensive it is! Freecodecamp puts the course at 2080 hours to complete. Realistically, I'ld think it is likely longer.