How to identify a plane?

[junjun]

How can i identify a plane? I don't understand what are those terms means,such as Hex code(24bit),Tail number,Tail code,Register number,serial number,callsign,flight number,BuNo. When do these terms use? Can any one explain and list some example?Thanks !

[Anmer]

There's a Guide here:

https://radarspotting.com/forum/index.php?action=tportal;sa=download;dl=item36