docs: add additional info to readme

README.md

@@ -16,4 +16,14 @@ cl main.cpp /Fe:"mario.exe"
 The script already has pragmas with needed libraries set up, so in case of `cl`, you don't need to add anything else to the command line arguments.
 
 ### With `g++`
-I am not sure if there's a way to do it with `g++`. It's better to just download VS Build Tools & roll in with that.
+I am not sure if there's a way to do it with `g++`. It's better to just download VS Build Tools & roll in with that.
+
+## Distributing
+For now, you need to provide an executable and a video file in the same directory. However, I am planning to release a packed version with both files in one executable, using `iexpress`.
+
+## The video
+The original video comes from [Mario Teaches Typing 2](https://www.mariowiki.com/Mario_Teaches_Typing_2), the exact source is from ["Mario Head Collection"](https://www.youtube.com/watch?v=9tQWLg4E90M&t=30s) on Youtube.
+
+If you want to replace the video, feel free to swap out `mario.wmv` with an another video.
+You will need to convert the video into a `.wmv` format, either by using `ffmpeg` or some obscure online converter. Just make sure to keep the same filename, or else, the script will immediately cause a BSoD.
+