Lung cancer with liver and lymph nodes Mets

Hello I am very new to the big C word we just got the results that my father who is my rock/best friend has lung cancer with Mets to the liver lymph nodes and possibly colon they are doing biopsy tomorrow to determine the type of cancer I am asking for any advice on any treatment options or plans we should ask about or consider for this or if any treatment at all will help and what the prognosis of cancer that has widespread is thank you I advance .