Can someone write a Markdown guide for Indie Hackers?

This is me just testing out some stuff. If nobody does it, I'll do it myself as soon as I figure out what works and what doesn't. I've been only using markdown text for a few weeks in a different editor, so...

THE BIGGEST HEADING # - So this one isn't working. I guess its reserved for the title.

THE BIG HEADING

THE SMALL HEADING

Ok, so that works. How about some ==highlighted text==
Guess, not.

How about bold and italic?
Yay!

I mean, if this doesn't work...

print (Hello World) OK, thank god. Can be used for code.

Code example
const app = express() app.use(bodyParser.json()) app.use('/api/products', products) app.use('/api/orders', orders) const port = process.env.PORT || '3000' app.listen(port)

But also this (could be used to highlight a big chunk of text as well, I guess.)

{
  "firstName": "John",
  "lastName": "Smith",
  "age": 25
}

Text example. You have to play with it a bit to get it looking like you want to.

Lorem Ipsum is simply dummy text of the printing 
and typesetting industry. Lorem Ipsum 
has been the industry's standard dummy text ever since the 
1500s, when an unknown printer took a galley of type 
and scrambled it to make a type specimen book. 
It has survived not only five centuries, 
but also the leap into electronic typesetting, 
remaining essentially unchanged.
It was popularised in the 1960s with the release 
of Letraset sheets containing 
Lorem Ipsum passages, and more recently 
with desktop publishing software 
like Aldus PageMaker
including versions of Lorem Ipsum.

How about linking a text. I work at Treblle, an API observability platform

And images. How do we do images?
There's apparently a number of ways to do this, still figuring that one out.

For now, before someone does a good old-fashioned dumbed-down explanation most of the stuff from the link provided by IH works. https://www.markdownguide.org/cheat-sheet/