Fanboys

FANBOYS is an acronym for the most common coordinating conjunctions in the English language.

Elon has his fanboys trained to congratulate him even when his rocket blows up.

The risk is greater with subordinating conjunctions (see “Starting a Sentence with Because”), but the FANBOYS are sometimes considered guilty by association: […]

These FANBOYS help create compound sentences, and when they serve this role, a comma comes before their use.

Avoid putting a comma immediately after any of the FANBOYS.