Follow their whitelist app if they have a whitelist. Then type the IP into the direct connect box in mulitiplayer.
Yes it's called the Default Minecraft Server Jar. If you are looking for an IP to get onto a server... wrong place.
To get onto a Minecraft server, click 'add server' on the multiplayer option and type in the IP of the server on the bottom box. The name does not matter. Then click on the server and click join.
You don't donate on minecraft, you buy the game, which then regesters your minecraft username to be a account that has bought the game. If you mean how do you donate to a specific minecraft server, then go onto the server website, and they will probbaly have a DONATE button.
That is probably because you do not have any other people on the server. To let other people onto a server you need to give them your server ip.
You cannot get Minecraft multiplayer for free. You must buy the game to be able to log onto a server.
Some servers have a "whitelist" that you need to be on to get into the server. These are also called private servers. To get onto a whitelist, you need to contact the people in charge of the server and ask them to add your minecraft name to the whitelist. If they do, you can now connect to the server by using the IP.
to get onto a server you must log in with a valid minecraft account
you can if you have bukkit and essentials installed onto your/others server and you are opped.
It may not be stable
Either you don't have the latest minecraft client or the person is using the program session stealer which when someone joins the server it kicks them with the message outdated cleint and takes their il logs onto a specified server your oped the does /op command to gain admin
go youtube and find out. these stuff mostly needs notepad sticked onto the server
Go onto the official website if there is one and email the owner of the server.