Stupid question: how does one watch old movies?

Please accept my apologies in advance if this is against any rules.

I have never watched an Akira Kurosawa film. How would I go about doing that?

I'm aware of the Criterion stuff, but it seems expensive if I don't even know if I'm going to like it (I have weird neuroses around movies; consequently, I don't watch many). Additionally I just don't want any more plastic in my house, if you know what I mean.

Any advice would be very much appreciated – thanks!

Edit: thanks very much everyone for the constructive conversation. I'll get an account at the library since I'd like to support them, and go from there. Cheers!