Conway-links
Conway LifeWiki
You musn't miss the Conwaylifewiki page
From the first view it's clear that Conway's game isn't long passed history, but remains alive and kicking.
People are still searching for new configurations and share their newest findings.
At the page you can find a mass of patters: still lifes, iscillators, spaceships...
radicaleye
Of course you will find good introductions on wikipedia and wikimedia, but the most comprehensive page on Conway's Game of Live is probably radicaleye.