Because the audio moves fast, the PDF serves as the safety net. If you missed a word on the recording, you scan the PDF for the transcript. This makes the invaluable for self-correction.
There is a specific subgenre of horror story that doesn't involve ghosts or monsters, but rather media . The forgotten cassette tape in the attic. The Betamax recording of a wedding that never happened. The floppy disk labeled "Dad."
A quick Google search for "Linguaphone English Course.pdf" will lead you down a rabbit hole of torrent sites, file-sharing forums, and sketchy download links. Before you click, consider the reality:
You are not just downloading a file; you are inheriting a century of linguistic science. Print it out, bind it, put the audio on your phone, and start talking. Sixty lessons from now, your English will be unrecognizably better.