LÖVE

I need to get the hang of coding plain 'ol Lua, right now I've been using Notepad++ for LÖVE coding, and have been considering using AnAL and PÖLIGAMY for my project.

but I need to know what would be a good IDE/something for regular lua coding so I can get the hang of it.

I use notepad++ mostly.

But, Geany is nice too. It even outlines all your functions and is cross-platform.

I use Notepad++, the multirow tabs and regular expressions become invaluable once a project gets to be pretty sizable.

excellent, thanks. I needed something that can run the code. (although I will continue to use notepad++ for love projects)

Oh, just boot up your faithful Lua interpreter in your favorite terminal.
http://code.google.com/p/luaforwindows/
It comes with SCiTE too if you want a more robust Lua debugger/IDE.