Here are some things that have helped me out and can (hopefully) help out other people who are new to CrossFit.

 Probably the best thing you can do for yourself is read.  Read a lot, and read often.  Do your best to research something before you ask someone- it's not that people won't help, it is just that the question you have has probably been asked 100s of times already and it gets old seeing them asked again and again.  

 Ok enough of the soapbox.  The best resource out there is the original FAQ found here or the Getting Started section found here.