Here's a really stupid question.
I just read a guide that said that levels and stars on your weapon determine your attack strength.
I read another thing says that the stars essentially boil down to a shorthand for your attack power.
What do I really need to look at to make sure I am using a good weapon?
It's not very complicated, but could have been handled a bit better.
Essentially there are multiple classes of each weapon such as Link's swords.
-Knight Sword: First starter sword type. (Base damage ranges between 80~130 based on star levels 0-5)
-White Sword: Upgraded second sword. (Base damage ranges between 150~250 based on star levels 0-5)
-'3rd sword': same deal with higher base damage based on star rank, etc...
Essentially the class of weapon(knight sword, white sword, etc...) can be thought of being on different tier plateaus of damage output. Knight sword = tier 1, White sword = tier 2, etc... If you get lucky, you can nab 4 or 5-star versions of these weapons that have larger base damage, but always less than the next tier in line(I think there are four overall tiers).
Therefore the smithy comes into play by taking new high level swords, hopefully with high star rankings and open slots, so you can fuse favorite skills from lower weapons onto them. It all starts making sense as you progress in the game.
*Keep in mind the Master Sword is considered a completely different weapon type and is not part of this example.