I'm aware that if I want to say 'The first [something]' it would be はじめの + [something] (i.e. like the manga/anime はじめの一歩 'The first step').
But now I got across the following phrase "はじめての夢"
What is the difference between はじめの~ and はじめての~ ?
はじめの just refers to the first one in a list/sequence. はじめての modifies some event/place/etc experienced or observed for the first time.