How to Beat Zelda II: The Adventure of Link (NES) - mechanics and walkthrough

A few minutes of mechanics, and a narrated walkthrough.

Any comments and suggestions welcome, there is pretty much always a better way to do something.

Soundtrack:

0:05 Zelda II: The Adventure of Link - Overworld
0:46 Zelda II: The Adventure of Link - Battle Theme 1
1:35 Zelda II: The Adventure of Link - Village
2:44 Zelda II: The Adventure of Link - Palace Theme 1
4:48 Zelda II: The Adventure of Link - Great Palace Theme
6:19 Super Mario Land - Muda Kingdom
7:04 Mega Turrican - Stage 1-2
9:20 Dangerous Seed - Stage Intro
10:39 Ironsword: Wizards & Warriors 2 - Mountain
13:02 R-Type Leo - Area 2: Red-Hot Desert
15:10 Golden Axe - Wilderness
17:40 Legendary Axe - Zone (4? 5A? 7? I've seen it as all of these)
19:35 Link: Faces of Evil - Serigon Caves
21:12 Battle Garegga - Fly to the Leaden Sky - (Stage 1 - Valley)
23:30 Space Harrier - Main Theme
26:12 Bomberman 64 - opening
28:39 Ys Book I & II - Ice Ridge of Noltia
30:49 Super Castlevania IV - Rotating Room
31:49 Ys Book I & II - Stay With Me Forever