I am going through it at the moment and have to warn you that this is not a general public book. It is a really dense academic work. If I was you I would get the main concepts by watching the university lectures. Then, if you want to explore further, you can go through the evidence he is putting forward in detail.
I really, really hate videos and podcasts and am not going to deal with them. Is there a text link I can read?
You can get the Maps of Meaning book as a hard copy or pdf.
I am going through it at the moment and have to warn you that this is not a general public book. It is a really dense academic work. If I was you I would get the main concepts by watching the university lectures. Then, if you want to explore further, you can go through the evidence he is putting forward in detail.