Connectors, how to start the process of choosing one

Connector check list.

Type of connector? ________
(Circular, IDC, D-SUB, RF, ETC)

Number of positions?______

Gender of connector (Male or Female)?

Does it need to be panel mount?

Does it need to Lock together?
(Threaded or Bayonet Circular, Push-Pull, Etc.)

Termination Type (Solder, Crimp, PCB mount)

Do you need Contacts?_____
If so, Gold or Tin plating?

Do you need Crimp Tools?

Does it need to be ROHS?

Do you need a Matting connector?