I honestly have new clue how to use them or know of any good shops. So if anyone could please explain them to me and recommend some shops, I'd greatly appreciate it. Thanks in advance
If you want to learn about marketplace layouts, I made a tutorial here (you can also see my own layouts there):
https://www.asianfanfics.com/story/view/1292849/3/visual-illusions
You don't need to learn about coding to use marketplace layouts. They're also easy to apply for stories.
Now if you want to use codes, you'll have to copy and paste them to the 'Source' editor (which is found while editing/inputting descriptions). Click it again to see the layout and edit them as deemed fit. Some layouts, however, look weird while you edit them but they look fine when you publish the chapter so don't be alarmed. And in other cases, it's better to edit them while on the 'Source' editor.
