How can make a search within a list?

How can make a search within a list?

  
Sorry my ingnorance, I just complete the frst trainnig video and I already have my phone book running.
So I want to put in the Home Page a fied in order to the customer imput their key and after that cliking or not a seach buttom the sistem take this information and disply it in the detail window.

Can you help me to find how can I do that please?

Thank you in advance