Submitting your stories and poems for publication can be a complicated process. Every editor has different tastes and needs; every journal has slightly different submission guidelines and reading periods; and then there's that whole I-could-revise-this-thing-until-the-end-of-time-but-I-REALLY-need-to-send-it-out consideration for every single piece you've ever written.
Publication success comes down to two things: 1) creating work that's worthy of being shared, and 2) persistence (because most authors will receive rejection letters for even their best material).
If it's a numbers game, you've got to be good at keeping track of all the data that'll increase your odds, right? That's why it's important to maintain thorough records of your submission history, notes about different editors and journals, and a complete list of your stories or poems that are ready for publication (at least in your own estimation). Thankfully, there are some great cheap or free tools out there to help you do exactly that.
How to keep track of your submissions
1. Use Submittable
— If you've ever completed an online submission, there's a 50/50 chance you've already used this tool (it used to be called "Submishmash").