I didn't use a guide. I remember getting Chrono Trigger for Christmas '95 (my youngest sister got Yoshi's Island that same Christmas, might I add: AWESOME CHRISTMAS!!!). Played through the game throughout late Dec '95 through early '96 and passed it without a guide. I also stumbled upon some of the alternate endings without a guide, though, admittedly, didn't know about ALL the endings until I started to first browse GameFAQs (which was years later).
i picked up a copy of Chrono Trigger in summer 1996 at Funcoland for like.... $10 or $15 dollars lol how times have changed.
'95 Christmas was so good for me too. I got: DKC2, Yoshi's Island, Playstation 1, Tekken, Virtua Fighter 2 and Virtua Cop w/ the light gun bundle.