Read the circular:
https://www.faa.gov/regulations_poli...mentID/1027574
Medical, written exam, application, interview at FSDO. I did the ATPL - ATPL, don't know about CPL. In Canada for the CPL flight test you really need to know how to fly, like range variance autorotations and confined areas, something ATPL guys seem to know nothing about, driving back and forth to 10,000' runways in simulators.