Duotrope is an online submission tracker. Once upon a time, it was free, but now there is a small charge for membership. Don’t want to pay, check out a previous post about spacejock software that offers a free submission tracker.
Why pay for the service? Because you get to take advantage of the experience of all the other members. The extensive list of magazines that publish stories and poetry also comes with a handy guide to how long other people waited for a response.
May the Muse be with you,