You need to use [Markdown](https://www.markdownguide.org/).  You can check the [SN FAQ](https://stacker.news/faq/r/ama) to learn what's available.

For example:

> Video upload from...

To link a sane private alternative video link you can do:

\[Bitcoin for Banking Failures with Parker Lewis](https://invidious.fdn.fr/watch?v=HbxyhDoEPg4) results in [Bitcoin for Banking Failures with Parker Lewis](https://invidious.fdn.fr/watch?v=HbxyhDoEPg4).

> Bold characters

\**Text in bold** results in **Text in bold**.

I don't know how to upload youtube video!

So after more than 2 months using SN you still ask this question?
[![sn.jpg](https://i.postimg.cc/brMcVgY2/sn.jpg)](https://postimg.cc/8fh0jh61)

DarthCoin

bitcoin

I don't know what command are,

Please comment your commands you know
I need Every single commands

Ex :
Video upload from youtube
Picture upload
Bold characters
Links e.t.c