A while ago I purchased an eMac off some dude that had kept it in his Garage, the furthest that you can get an eMac to go is up to Leopard, which is before Leopard. Software is hard to find, because Mac software slowly disapears off the internet as new versions come out that don’t support it anyway, which I think is a travesty. I barely got the Wireless B Slash not even G working and then I needed a Browser, because Safari had not had an update in a while and something was up with SSL certificates. Anyway, I found this – https://www.icab.de/

Don’t buy old Macintoshes, unless you want to play games on like Rosetta stone that are made for MacOS 9 and then maybe but other than that you are in a jam.