Depends what vocation you have. Like if it was a Warrior, and the Warrior had a spear. Then you'd go for the Spear skill points. And if the Warrior had a sword, then you'd use the sword skill points.
But overall, it really depends on how you plan it out.
Save it if you want, and use it later. But I just use mine so I get better attacks and can level up faster and easier and get more skill points. So just choose and ponder a bit, save them up.
Then once you find the abilities you want to have, then use the skill points.
Its either Dragon slayer or black nights fortress
go to nythera's quest and go strait when you just start the quest until you see the dragon statue.
adventure quest
graham whip
dragon because dragon is a good typ and they are very strong
in falconreach.go to ash and pick the quest that says challenge
45
This information has not been found out yet, the best idea if to look at Dragon slayer and check on that to find out, since that is deemed the hardest Non-Members quest.
Karthus
Dragon Dagger P++ or Just a Dragon Dagger or you can use the Dragon Long. I like the Dragon Dagger P++ best Dragon Claws are 28million gold. they are best as of now. i recommend you do monkey madness and get dragon scimitar because sooner or later you will have to because dragon longsword is very slow to train with. dragon 2 handed sword is around 1million gold dragon spears do not require a quest but are not that great.
The best axe is a Daedric Battle Axe with 26 damage output.
Dragon Bones on a Gilded Altar.