In case you're thinking more like what I did when I first started making macros (and even if you're not I feel someone should still put this stuff somewhere) here's my compilation:
1) Double brackets are your best friend and work rather like normal brackets in maths, BEDMAS. They're also great when you want to highlight a number.
Example: [[ [[1d20]]*10]]
2) Making text bold.
Example: **Example text**
3) Pulling stats from a character sheets, you can change "character_name" to any stat, to find the command hover over the stat in the character sheet. Example 1 requires you to have a token selected before you click the macro. Example 2 requires you to click on a target token after clicking the macro. Example 3 pulls a stat from a set character's sheet.
Example 1: @{selected|character_name}
Example 2: @{target2|character_name}
Example 3 @{character name|Str-Mod}
(You can use the @{target|info} and @{selected|info} in so many ways, and multiple times for multiple targets, just add numbers after)
(Using token_name can be useful if there's no sheet for them)
4) You can make various different queries than prompt pop up boxes. There's 3 kinds I know of. Example 1 shows a box where you input a number or word for it to use. Example 2 gives them a drop down choice (the first part before the comma is what you the option will be named, the part after a comma is what that option will actually do). Example 3 is asking if you want anything after this point (on this line) to show or not (Leaving the ! in will mean the it will mute the line. Removing the ! and leaving it blank will display the line).
Example 1: ?{name of question|1}
Example 2: ?{name of question|option 1, option 1 does this|option 2, option 2 does this|option 3, option 3 does this}
Example 3: ?name of question|!}
(Putting identical queries will make the macro prompt come up once and use the answer each time/place you used that command)
5) Put speech marks around names or text if they have spaces in them and you want them treated as one name/word in other commands
Example: /em "John Snow" dances a jig
Example: /em "@{selected|token_name}" worships the sun
Not everything by far, but most of what I use (that I can think of right now anyway). :)