Barry is correct. You have to claim all income. However think about it when you file and write off everything with your training, equipment, dues, transportation, meals, hotel. blah blah ....guys help me out here.... You are better off going to a CPA, for the $400-$500 he will charge you, more often than not he will make that up in savings. The form is a schedule C.
disclaimer, I am not a CPA and cannot even count up to my age in one sitting...but I have stayed at a Holiday Inn Express