Can't connect to server


Loyal Servant of Altera
I am very new and haven't even gotten on the server yet! I am not able to, and I don't know why.
I have the Windows 10 1.9.0 version of Minecraft, and I think that I've put everything correct into the server's information:
Name: World of Altera
Port: 25565

It can't find the server and I don't know what to do!!