Facebook Code Pages

I have gotten advice that it's best to buy your own codes for pages, but at this stage, being a newbie to this, I would like to ask 3 questions.

Question 1
Does anyone have any free codes that would be helpfull(None that would get page removed). At this point i'm not willing to pay, but if someone would make me a reasonable offer I pay.

Question 2
When I get to the point where I want to buy codes, wheres the best spot to ask? On this forums, i'd guess, but what exactly would I be asking for and what does each do?

Question 3
How do people have it so when you like it, it prompts somthing to have it also share it on their wall? In your experience is it worth it? I understand it may drive some people away, but was it better for your page?

Appreciate it guys.

Did you buy a cloned script?

No, I'm new to everything that involves pages and scripts. I have a little experience with scripts in general but nothing that pertains to scripts and facebook.