You can open the Player Warp menu using
/pw. You can then click on any of the icons of Player Warps set by other players to teleport to them. Keep in mind that some Player Warps have a cost to warp, set by the warp owner.
The Player Warps main menu, seen from /pw.
You can view and manage your warps within the menu by clicking the Ender Pearl. From there, you can change the description, ban players, set an icon, rename, delete, or transfer ownership of the warp.
To set a warp, use
/pw set <name>. Setting costs $250, and unranked players can set up to 2 warps.