If you are having trouble with "The Strong" quest or a different quest, you can use the command "/hqm edit" to gain a special quest book used to instantly complete quests.
The village elder at the start of the game will tell you to take the map "UNDER MY DESK". Break the desk on his left side, then right-click the floor. The map is underneath. If you cannot find it under his desk, see step 1.
To avoid respawing in the overworld, use one of the carpenter's beds in the outpost loft. If you fell into the overworld and will not respawn in the aether, simply return to the Necromancer and ask him to take you there.