Curated OER
Punctuation Basics - Restrictive and Non-Restrictive
Commas have many different functions: they combine items in a list, set off nonrestrictive clauses, and more. The restrictive clause is comprehensively covered by Yossarian the Grammarian.
Curated OER
Halt! Whom Goes There? - Pronoun Case, Continued
Pronoun cases are continued, focusing on the times to use who or whom. As long as you know what part of speech each is functioning as, there is no longer any confusion. Yossarian the Grammarian adeptly explains this concept.