Use WinRAR or 7-Zip . Right-click the first file ( part01.rar ) and select "Extract Here."
If "paper" was part of a password hint or a specific site category, it usually implies the file is a "paper" copy (metaphor for a backup) or requires a parity check. Kellys Heros (1970)-alE13_BDRemux.part09.rar
If you are seeing this file name and need help, here is what you likely need to do: Use WinRAR or 7-Zip