Learning Lua

https://www.tutorialspoint.com/lua/index.htm https://hackr.io/tutorials/learn-lua http://luatut.com/assert.html

lua itself giving an ebook for free https://www.lua.org/pil/contents.html its pretty good starting point i might say.

https://github.com/LewisJEllis/awesome-lua/blob/master/readme.md#resources