This is a video walkthrough / playthrough / runthrough / etc of the Famicom Disk System version of the first Zelda game.

In this video, I collect everything you can get before entering the first dungeon. And as I collect more items from the dungeons, I go out and collect all that I can before entering the next one, etc....Doing this makes things a lot easier for quite some time (A bit overkill starting the first dungeon with the white sword and blue ring). Also, you'll notice I have plenty of extra keys since I bypass quite a bit of each dungeon here and there when I'm able to with bombing the walls..

This is pretty much what I did in my NES video for the first quest, so I'd imagine they would almost be identical except for maybe a few tiny things here or there.