Basic examples
/tp @p 0 64 0: teleport nearest player to coordinates./tp Steve Alex: teleport one player to another player./tp @a ~ ~10 ~: move all players upward relative to their current position.
Coordinates
Use absolute coordinates for fixed places and relative coordinates with ~ when running commands from a player or command block.
Warp systems
A simple warp command can be built with command blocks, buttons or functions. For public servers, check permissions before letting players run teleport commands.