Now, to figure out how to copy files from a Windows PC to a Macintosh...
It's a good thing it came with more than 1 MB of RAM. The tricky thing about the Classic is that while 1 MB is soldered to the motherboard; any more than that requires an accessory memory expansion card. The expansion card has another 1 MB soldered, plus two 30-pin SIMM slots; each of which will accept up to a 1 MB SIMM.
So if you ever see a Classic with only 1 MB, avoid it. It means it doesn't have the expansion card, without which, you're not going to add any more RAM. And those RAM expansion cards are hard to come by now.
Second, for copying files; try putting in a PC-formatted floppy. It might have the "PC Exchange" software already on there, which allows the Mac to read PC-formatted floppies. The real trick is that hopefully it has Stuffit already on there.
The Mac OS uses files that have two 'forks' to them. One is the 'normal' data fork, the second is the 'resource' fork, which contains things like the icon, metadata, the file type (no .xyz extensions, after all,) and the creating application. When you copy a file from a PC, it only has the data fork; so the Mac OS doesn't know what to do with the file. If you have PC Exchange loaded, that software will translate the three-letter-extension into Mac-friendly 'creator code' file type, so you can open them. But many Mac-specific files *MUST* have their resource fork, or else the file becomes useless. (Applications, for one, suffer from this.) If you try to download the file in Windows, it will be missing its resource fork.
That's where Stuffit comes in. By compressing Mac files into an archive, it retains the resource fork. Even if the Stuffit archive (.sit) doesn't have its resource fork any more, the files inside do. And Stuffit Expander is nice enough to work on .sit files that have lost their resource fork.
Other online formats you will see for older Mac software are:
.bin: Raw Macintosh binary, with resource fork. If you download this on a Windows machine, it will become useless.
.hqx: Bin-Hex file. A 'text encoding' format, like UUENCODE, that includes the resource fork. You'll need a software transcoder (Some later versions of Stuffit will do this,) to translate back to native Mac. This not only doesn't save space (like a Stuffit file,) it takes *MORE* space, since the file has been encoded with plain text characters instead of the more space-efficient binary.
