Party and stash

Party

• Invite from the player list (top left) or type /invite name. Up to 4 players; the leader invites and kicks.
• Click a member to warp to them (from town or a waypoint) or whisper.
• Members in the same zone get XP for every party kill, plus 10% for each extra member there.
• Chat: /p text party · /w name text whisper · /leave

Friends

Type /friend name or click a name in the player list and choose Add friend (they must be online and accept). Press H for the list: see who is online, in which zone and on which difficulty, and whisper, invite or trade right from it. You are told when a friend comes online. Up to 50 friends.

Trading

In Emberhold, click a player and choose Trade, or type /trade name. Once they accept, click bag items to offer them (up to 12) and add gold, then both confirm. Any change clears both confirmations, and the server checks items and bag space again before swapping.

Stash

The golden chest on Emberhold's west wall: 4 tabs of 40 slots shared by all your characters. With it open, click a bag item to deposit and a stash item to take it back.