Best place to learn Lua?

Anything that I can easily view, without payment? Youtube Channels and other links are accepted.

You can start reading here for some of the basics:

https://scriptinghelpers.org/glossary

Or you can check out the Wiki:

http://wiki.roblox.com/index.php?title=AllTutorials

Along with what SirBrayden said, I have a few more places

Here are some great youtubers to help

https://www.youtube.com/watch?v=NSQQ9ZchtzE Channel = ROBLOX

https://www.youtube.com/channel/UCp1R0TBvgM7gj0rwTYULmSA Channel = AlvinBLOX

https://www.youtube.com/user/PeasFactory Channel = Peaspod

https://www.youtube.com/user/JohanSKruger Channel = JohanSKruger

https://www.youtube.com/user/Rrrrry123 Channel = Rrrrry123

https://www.youtube.com/user/nejihyuga901 Channel = Friaza

Those are the main channels that I recommend. But, there are a TON more you can check out

The Wiki is a great place

http://wiki.roblox.com/index.php?title=AllTutorials

http://wiki.roblox.com/index.php?title=Beginner%27s_GUI_Tutorial -- for GUIs

Of course a lot more

Yes, free models are also a great place to learn

Hopefully I got all that I saw ;3

(sorry if the special comments are wrong. I really only use Lua. If they are wrong I will fix them)