Wow, just re-skimmed it, the difference is incredible. Completely different post it looks like. Here are some new ones I'm figuring out now :)

#Hashtags like this, don't know if it produces a link or anything.
If you put words between two asterixes you get italics - Above the 8 key
I don't know what it's called but pressing the button above the tab key twice and putting words in between it does this
If you type < b > at the start of the sentence and then < / b> at the end of the sentence, without the spaces, it creates bold.
"asasa"
Like how you used the < > for bold, you can do it to make different sized text as headers using < h 1 > and then < / h 1> without the spaces. You have do open and finish with the same number. So you can't do < h 1> and </ h 2>. You can do numbers 1-6.
You can also use double asterix before and after text to make it bold
You can also use single underscore for italics and double for bold

If you use > "Insert Text Here" but it's a block quote so it has to be on another line.

"you can make a quote"

You can make a table using the pipe ( | ) thing. Using hyphen pipe hyphen ( - | -) with no spaces. So for the below table I did table item 1 (pipe) table item 2. Then I did the hyphen pipe hyphen ( - | -). Then I did apples (pipe) The pipe is the button on the left of Z on keyboard and you Shift + Pipe button to make it.

TABLE ITEM 1	TABLE ITEM 2
apples	oranges

You can tag any user with the @ before their name. Whether or not this notifies them, I don't know... @teleadan
Finally, put any words with two ~~ before and after with no spaces and it will strike through