Network Attributes details

Hello, could someone with a better knowledge could help me and tell me more about Network Attributes such as [Command], [Server], [ClientCallback]. [ClientRPC], [SyncEvent]. How or better WHERE and WHEN should I use them? I have seen it in documentation but I would like to know more details what should be done on the server and what on a client, should I mix them together? E.g I (as a client) do something or cast something what attribute should I use? What should I use for that to be seen on the server and other clients? I was trying to figure it out by myself but I failed. Thanks.