Correlative conjuctions works in pairs to join phrases, words, clauses that carry equal importance within a sentence.
Example:
1. I will either go for swimming or stay at home and sleep.
2. Neither steve nor his friends like cabbage. etc
Some rules to consider when using correlative conjuctions are: subject verb agreement and pronoun agreement.
In subject verb agreement, the verb in your sentence must agree with the correlative conjuctions whereas in pronoun agreement, when using a pronoun in a sentence it must match its antecedents.