where do i put my .lua on a client sided server?

i made a few lua files but where do i install them? (folder)

how do you know how to make Lua scripts, but not where to put them…

garrysmod/lua/autorun/file_name.lua and at the top of the file put:

[lua]if SERVER then AddCSLuaFile() return end[/lua]

i know a little lua but not that much i just started like yesterday