I played Zelda for the first time ever at 23, and I managed to beat it without a guide or map. The only things I did look up were:
>things in the manual
>bow and arrow (never realized I missed it in dungeon 1)
>one heart container
I also didn't know you could bomb walls or burn bushes, but I found out from an AVGN video that randomly showed footage from Zelda.
Pic related, my notes so I didn't forget how to get to Gannon after dying the first time. I had a lot of fun and thought it was a well-designed game, although I don't think I have the energy to do the second quest