Best place to learn Lua?

I’ve tried YouTube and I have found nothing but outdated videos or YouTubers that only covered certain aspects, I want to learn it.

I also tried this but apparently it’s outdated.

So please, tell me where you guys learned.

http://www.facepunch.com/showthread.php?t=1337945
A thread on the same topic was on the front page of developer discussion, is it really that hard to look down a page?
(http://forum.facepunch.com/showthread.php?t=1399025)