Migrating from old Macbook pro to new Macbook air; Where are my files?

Hello, I used the migration assistant to transfer files from my old Macbook pro to my new Macbook air. The transfer indicated the process was completed. Now, where are my files stored? I have tried a number of options from online resources and perhaps it relates to the files being stored in iCloud? these options have not worked. Any assistance appreciated; a very frustrating process.