You simply do a Resume in an email so they know who you are, and where you've worked and any other info they asked for.
This is pretty basic stuff so don't be intimidated, just ask like you did and someone will answer.
But, be very, very careful of people online who are offering you a job, any job that you haven't contacted them about first.
Most of these are scams and never, never, never pay a fee for any job or put up money to cover any check that may have been sent you that someone on the other end wants you to pay them for before the check clears your bank - this is a good way to lose a lot of money fast. Wait until the check clears... These are all scams.
I know I did a couple of these for fun last year. Both were bad deals and my bank charged me $3 for each bad check, so ,,,,,