I've GOTTA believe this is intuitively obvious to everybody else, but I'm flummoxed...

I want to go out and download old episodes of Car Talk. They're out there as podcasts, but I can't figure out how to grab them... I don't want to subscribe and have something send me new ones every week. I just want to find things from say, 2010 or 2011 and download a BUNCH of them in bulk to my Windows 10 system. Then I'll put the .mp3s on my phone as needed so I can listen to them.

I KNOW I've done it for free in the past 'cause I have several sitting here, but I cannot remember what I used or how I did it.

So, what software do I use, and how do I download a bunch of these?