Here are a few links to famous games, annotated games, and kibbitzing on the Old Indian, and a Valeri Lilov video :
http://www.chessgames.com/perl/chessopening?eco=A53
http://www.chess.com/video/player/openings-for-beginners-the-old-indian-defense
and of course the very good Wikipedia introductions... :
http://www.chess.com/video/player/openings-for-beginners-the-old-indian-defense