Differentiate between conversational English and formal written English. Pretend you are writing an article to be published in a journal. Wording on left is example of colloquialism:
Kid(s) = child(ren)
Mom = mother
Dad = father
Guy = person
Tons of = numerous
Honestly crazy, insane = honestly astounding
Wild = amazing
Look a little bit at = take a cursory view; quick overview
Big deal = extremely important
Bunch = collection
This then . . . = consequently (if causal); subsequently (if temporal)
Contemporary = at that time period; current = now
Go on = take place, occur