LÖVE

All ways i found to create buttons are really messy and ineffective, anyone has any suggestions for main menu buttons?

What ways have you found? There's a few libraries on the wiki that're quite good, like Quickie and LoveFrames.

http://www.love2d.org/wiki/Category:Libraries

Emm, all i could think of was checking coordinates every time left mouse button has been pressed down, but my menu consists of 6 diffrent choices, that would take a lot of lines of code, so i didnt bother.

Checking the mouse coordinates and matching it against any active buttons is pretty much the way to go. But the libraries I mentioned will do it for you.

How about simply putting every button in a table, so you could just iterate over them, like this:

Well, check out Sock Munkee dev's video on it, if all you need are simple text buttons, but if you want to make GUI's and some better looking buttons, I'd say look into LöveFrames. It's very easy to use, there is extensive documentation on it and(PLUG!) I make my own tutorial series on LÖVE, and all I have to do is upload those episodes tonight and you could follow those to learn how to make buttons. I would suggest at least checking out some of those libraries: They could save you a lot of headaches.

I have a little problem using other peoples codes, i can't really understand what is going on if i haven't made it myself

That's a common thing actually. It gets especially bad if people don't format their code properly - don't use tabs *coughjjmafiaecough* or whitespaces *coughmonkeymancough*. And of course if they don't comment obscure algorithms *couggthembothandmanyotherscough* it gets REALLY hard to read others' code.

I think he means more along the lines of something like this:
Since they didn't make it, they don't know how it works. That's at least true for me.

I always like a thorough explanation of what the code does, so I can be able to write my own version of it.