From 1 to 10, numbers should be written out: one, two, three, etc...
Above 10, numbers should be written numerically: 11, 12, 13, etc...
If there are too many numbers in a line, write numbers numerically
Use numerals when exact times are emphasized: 9:30 a.m.
Use lowercase a.m. (ante meridiem) and p.m. (post meridiem)
Use numerals when exact times are emphasized with a.m. (ante meridiem) and p.m. (post meridiem): 6 a.m., 8:30 p.m.
If the more general 'o'clock' is used, however, all numbers should be written out: four o'clock, eleven o'clock
Spell out words/phrases that do not include actual numbers: half past, quarter to, midnight, noon
Dates should be written as numbers instead eg. 1987
Decades should be written like this: '60s

ballin', not ballin (contraction of “balling”)
‘til, not til (contraction of “until”)
'em, not em (contraction of “them”)
‘cause not cause
don’t not dont

Tryna (Trying to)
‘Til (Until)
‘Cause (Because)
Finna (I’m fixing to)
I'ma (I am going to)
Turnt (Turn up)
Gon' (Going to)
Outta ('Out of')
E'ry (Every)
Nah mean (Know what I mean?)
Lil' (Unless a proper name)
Cuz (When referring to a cousin, or brother, friend, comrade, etc and NOT abbreviated "because")
Ya (Should be used when in place of “You”)
Yah (Should be used when in place of “Yeah/Yes”)