Contributing to FreeBSD

[Rafael Rodrigues Nakano]

Hello,

I would like to contribute to FreeBSD in terms of code, but I don't know
where, exactly. I use most of the time C in my free time hobby projects,
but I know a bit of C++ and the concept of OOP. But I found no way to
contribute to the system itself, I should study more before entering the
Operating System Programming world. However, like I said, I'd like to
contribute to FreeBSD, so, should I try to enhance the user-level
applications or something like this? (I saw that 'freebsd-version' is a
shell script and I think I could make a more information-detailed version
in C, or something else). Sorry if it's a really dumb question, I like
FreeBSD so much and I know I need to contribute to the development somehow.

Is this the correct way (if not, the easiest one) to start contributing to
such a great OS project like this?

And, finally, how exactly I submit my code? CVS? Git? By email?

Thanks in advance.