Launching Zip files

I have downloaded a Zip file from MIT containing course material including pdf files. I can extract the zip files but there is no indication on how to use them to obtain the course notes . Do I need some special software to dd this?

You posted a duplicate but it seems the content was accidentally deleted.

Please edit your post and add the relevant information, including the format of the zip file, what type of content you were expecting to find inside, and what version of Ubuntu you are using.

Thanks.

I have found the answer in the support section of MIT - the file containing pdf course notes was in the“static_resources” folder so mark the post as solved. Ubuntu 24.04