One word - Patience.

I was in a boxing gym for 6 months before I sparred. I wanted to do it sooner, but the coach wouldn't let me. I wasn't ready, and few really are.

Focus on the basics. Develop your jab. Footwork. Your guard. Get fit in the process. It isn't a race, and you'll be better off for it when you do get in there. Develop your jab (I say this twice because it is so important...this is as much for defence as it is offence). It is very tough to unlearn bad habits, so get the fundamentals down now.