human
build an old movie collection on dvd are there old movie sites
gpt
Sure, I know a few popular ones.  The Old Movies channel on YouTube, of course, and there are a lot of sites that host free movies and TV shows.  I recommend you check out the two HBO channels, HBO GO and HBO NOW.  They both offer a huge selection of older movies and shows.
human
I would like to buy dvds and start a collection
gpt
Are you looking for anything specific?  Are you interested in old black-and-white classics?  The work of a certain director?  A certain era?  Or are you interested in just a bunch of randomly selected movies?
human
Just random like westerns drama and such
Do you want specific titles, or would you like to build a collection of random movies?  If you want to build a collection, you might want to check out if there are any blockbuster or well-known movies you might want to start with, and if there are any genre
What kind of movie are you interested in watching?  Do you want something serious and dramatic?  Or do you want something fun?  Perhaps a murder mystery, a comedy, a musical, a horror movie, or something else?