You got hired? Congrats! Where are you working?
I was nervous when I started too, but things have worked out great. Teaching other people to fly is a great way to polish your own skills. When a student has a question or concern that you are not sure about, just be honest with then, research it that night, and give them an answer the next day.
One word of advice, do not get complacent with any student. Always pay attention and be ready to respond during any critical phase of flight. I have a couple scary stories I could tell you.....
Being a flight instructor is fun and very educational. Now, if I can only pay the rent this month.......