Duration = indefinite and the registered agent can be you, your partner or one of your parents or a combination. That's basically who's the registered owner of the incorporation. Stock, you can issue 1-1500 shares of privately held (different than publicly held on Wall Street) to be distributed between the owners. Please note that once you file, you'll have to pay to submit your annual report (a requirement):
Annual Reports

All corporations, limited partnerships, limited liability companies and limited liability partnerships – domestic or foreign, must submit annual reports and associated filing fees each year. The annual fees are:

$50.00 for all corporations, limited partnerships and limited liability partnerships;
$50.00 for all limited liability companies; and

$25.00 for all non-profits


It's ok that you don't know these things and good that you ask.