Hello Allison!
For me stock has been a good way to get started in selling my pictures.
A couple years ago I made a short video about how I do it and my recommendations on stock sites.
https://youtu.be/AlpkzeU-vJU
Since then, Lightstock has changed in that they no longer do exclusive. So now I upload all my stock pictures to all of my six sights. And a little surprising to me, the “faith based” pictures sell very well on the other sites.
If you’re a member, the new lenspiration course has a lesson on selling for stock.
https://www.lenspiration.com/lesson/stock-photography-considerations/
-Hannah