I know you are interested in what this community is all about, or you would not be reading this now. So let me see if I can clear it up for you.
Flash fiction is a fun way to create a short story and not spend a lot of time doing it. It consists of one-thousand words or less and gives you an opportunity to write until your heart is content. I have read many different ideas on what is required for flash fiction stories, from fifty-five words to one-thousand. I prefer one-thousand, so I will write up to the max words allowed and you may write the number of words you prefer in your stories. I will caution you that if you are using Flash-Fiction as practice for, one day, entering a contest, then you should work at not going over the limit. If you have any questions, I will try to answer them for you.
Write till your heart is content.