There is an online version of this book, however I do advise you to buy it if you want to learn the language, both to support the author and since a paper copy is advantageous when learning. If you do ...

+The reference manual is the official definition of the Lua language. +For a complete introduction to Lua programming, see the book +Programming in Lua. + + +This manual is also available as a book: ...

Publisher's note: This edition from 2021 is outdated and does not make use of the most recent Roblox features and Luau programming scenarios. A new second edition, updated for Roblox, Luau scripting ...