Custom Join Messager
With this plugin, you can create a message that will show when a player joins the game. There are 7 message lines you can set-up in the config: 6 for the player who joins, and one for all the other players so they can see when a new player joins.
Commands
There is only one command, the main part is in the config. /joinme for the basic information, the permission for this is joinme.help (if you don't have a permission plugin installed, all the players are allowed to use this command.
Config and First Setup
In the config (/plugins/JoinMessage/config.yml) you can manage the join messages. Six lines for the player and one for the other players. When you install the plugin (put it in your /plugins folder) you have to reload two times. Then you can change the join messages and the join brodcast. The broadcast should be something like &e&p &2has joined the game, in the messages you can tell the player something about Events, News, Tipps.... Whatever.