This is a 20 part tutorial series of how to recreate the original Super Mario Bros from the NES days from scratch using as much of the original graphics, sound and music as possible.
While there are some advanced techniques used, the tutorial is aimed at beginners and I've explained all the concepts I use in as much detail as possible. Hope you enjoy it.
All of the resources are in the descriptions of the video. As of 4/9/2015, the series is complete.