Hosta

"Hello world"

• Module:Bananas: The simplest possible script: say "hello world". Providing a single function with no arguments.
• Module:BananasArgs: Demonstrates how to access and use parameters.

Documentation

• Scribunto Lua reference manual (Manual for the Mediawiki implementation)
• Programming in Lua (Official book/introduction to Lua)
• Lua tutorials at lua-users.org

How-to guides

• Help:Lua for beginners
• Wikipedia:Lua style guide – standards to improve the readability of code through consistency
• "What do converted templates look like?" (slideshow)
• Wikipedia:Lua string functions
• Wikipedia:Guide to Scribbling

Testing modules

• Module:UnitTests - used to power many module unit tests, which are usually found by the name "Module:(your-module-Sample unit tests for the "Hello world" modules:
• Module:Bananas/testcases – Results
• Module:BananasArgs/testcases – Resultsname)

Profiling modules and functions

• Module:Timing – module to do some simple probing of timing issues, mostly to spot and fix load problems

Wikipedia resources

• Special:PrefixIndex/Module:Sandbox - allows you to work on a set of files within a sandbox prefix.