Yes, the common application essay questions are available at commonapp.org, and you can brainstorm what they are, bounce off ideas from your friends or family, but you don't need to really write them right now.
It's February, and with so much time left for you to grow and decide on what you want to write, I'm not quite sure that you're ready.
Take your time. Do your academic work, talk to your teachers about who's going to write your recommendation and, obviously, plan out your testing. The essay process will have its time. Trust me.
So right now, do not work on your essay. Just do what you're supposed to be doing. If you want more advice, we're at StrategicAdmissionsAdvice.com and Strategic...