@lemonkitty111 I know I'm not who you're looking for, but I recommend reading other online pieces and look for vocab, style and layout of their stories. Then once you've familiarized yourself with online layouts, then you should read paperback published books and do what I told you earlier, but not as much the structure.
Of course, you should also learn basic writing techniques, like grammar and punctuation, but you should also keep in mind on how to make a flow in your stories, make it so you can glide over your own reading without needing to stop every now and then. Also remember, show don't tell, and learn to make fight scenes, they're difficult to write, but is really fun once you learn it!
Good luck!