Here are the weapon quests and the tasks. Just incase
Cutlass
Task 1: Visit Will Turner. Task 2: Follow Will's training.
Pistol
Task 1: Visit Barbossa. Task 2: Follow Barbossa's training.
Voodoo Doll
Task 1: Visit Tia Dalma. Task 2: Item 1: Plunder Pitch from a Fort Charles Storage Container. (need item list for task two)
Dagger
(need item list and task list)
Grenades
(need list and tasks)
Voodoo Staff
(need item list and task list)
I will be editing the guide as I go along. Please PM me with any info I don't have on Voodoo Doll and Dagger quest. I will do Grenades and Staff later. Thanks!