[support] How to create "index" pages of content

[Errol Sayre]

Hi, I'm still very new to Drupal and am trying to figure out how to  
set things up.

I'd like to have "index" pages for my content types. For instance  
"podcasts/" where it lists all my podcast audio content, and a  
"gallery/" where it lists all my image gallery items, etc.

How do I do this? I've been able to kinda do what I want using a URL  
alias to a taxonomy term/category but this isn't ideal, because my  
terms are not necessarily exclusive (i.e. a photo may come from a  
podcast recording session and be tagged podcast).

I'm sure this is really simple but I seem to be missing.