Guys! In this quick tutorial, I'll be showing you how to make your posts pretty using Markdown styling!

Headers

First we'll learn about headers. A header starts with a hash symbol # followed by a space:

# A header

Output:

A header

Headers can be a variety of sizes. A smaller header starts with more hash symbols. The number of hash symbols can be 1 to 6:

#### A header with 4 hash symbols

Output:

A header with 4 hash symbols

Alternatively, you can also "underline" a text with = or - to produce headers

First header (Same as # First header)
--------------
Second header (Same as ## Second header)
===========

Text Styles

You can make italic, bold or strikethrough text.
Put the text between a pair of * or _ to make it italic.

*italic text*
_also italic_

Output:
italic text
also italic

Put two * or _ on both sides of text to make it bold.

**bold text**
__also bold__

Output:
bold text
also bold

You can also do a strikethrough by putting two tildes (~) on each side:

~~strikethrough~~

Output:
strikethrough

It's ok to mix up those stylings:

**_~~bold, italic and strikethrough~~_**

Output:
bold, italic and strikethrough

Lists

There's two kind of lists in Markdown: unordered (bulleted) and ordered (numbered). Since repl.it talk Markdown doesn't support ordered lists (sadly), we'll only deal with unordered lists.

An unordered list item starts with either a *, + or - followed by a space:

* this
+ that
- and stuff

Output:

• this

• that

• and stuff

Use indentations of 2 spaces to make sublists

* list item
  * sublist item
  * yet another sublist item

Output:

• list item
  • sublist item
  • yet another sublist item

Links

Just paste the URL and it'll work:

https://repl.it

Output:
https://repl.it

If you want custom link text, try this: [link text](URL):

[Repl.it](https://repl.it)

Output:
Repl.it

Images

The Markdown syntax for images is pretty simple: ![alt text](URL):

![Repl.it logo](https://repl.it/public/images/icon-square.png)

Output:

Wait... what if my image is stored in my computer? It doesn't have a URL!
Well, repl.it provided an easy way to upload images. All you need is to click the select files button below to upload it. After that, you'll see the Markdown code for your image in the text box.

Code

And finally, code!! Inline code and code blocks are widely used in repl.it talk since repl.it talk is a platform for coders to share.
Wrap a pair of backticks (`) around text to make a span of code (inline code):

`$ node index.js`

Output:
$ node index.js

To indicate a block of code, put three backticks (```) at both the start and end of your code:

```
This is a code block.
Everything here is monospaced.
```

Output:

This is a code block.
Everything here is monospaced.

Additionally, repl.it supports code block syntax highlighting, which is pretty useful for emphasizing readability.
Just put the language name (or its short form) after the three backticks:

```js
while (true) 
  console.log("MARKDOWN IS AWESOME!!!");
```

Output:

while (true) 
  console.log("MARKDOWN IS AWESOME!!!");

Blockquotes

To do blockquotes put a > before each line of the block:

> Timchen is the greatest and
> we should praise him

Output:

Timchen is the greatest and
we should praise him

Don't forgot to leave a blank line after each blockquote!

Horzontal rules

A horzontal rule (a line that separates content) can be made of either three asterisks (*) or underscores (_):

There's a horizontal rule below
***
There's a horizontal rule above

Output:
There's a horizontal rule below

There's a horizontal rule above

That's all what I can teach in this very tutorial. Start using Markdown to style your posts, and find more about it!

Orginally posted (then deleted) by JSer. I revived because we link to it in the app