New to LabVIEW and looking for help!

[Wawa]

Ok, so my team is pretty small (about 15 members) and our only programmer left recently. We have had no programming mentors so far and nobody knows how to code. I plan on learning how to program the robot in LabVIEW, but I have absolutely no idea how LabVIEW works.
I found a few things on the FIRST site and around here, but with the new changes, I'm not sure how things are supposed to work.

1) How different is it going to be to program with the roboRIO from the cRIO?
2) What is the code supposed to even look like?
3) How do I begin the code?
4) Is it possible for me to learn all this before competition?

Thanks to everyone!