freebsd programming

[Jai]

Hi

I am a student in Computer Science. I m moved ***** to FreeBSD from two year 
ago and enjoyed the power of BSD. But now I want to program it so that I 
customize it to get best results. I want to program it. I know shell 
programming, c programming. Is this knowledge is sufficient to program to 
FreeBSD or I need to learn more. Please guide me how can I make my desires 
true. Also tell me the steps by step development procedure of FreeBSD.

Regards
Jai