Hi mijostyn,
Here are some resources I found.
For cleaning: https://www.loc.gov/preservation/care/record.html
Unfortunately 78s are not that simple for decent playback. They had variations such as speed (not all 78), groove width (thus different stylus widths), and EQ (nearly all were produced prior to the RIAA standard), among others. Here is an overview: http://midimagic.sgc-hosting.com/mixphono.htm
For various styli options and reasonable priced EQ devices, see this: https://www.esotericsound.com/index.htm
Of course it all depends on how many records you have, how much interest you have in getting the best out of them, and how much time and $ you want to commit. Have fun.
Here are some resources I found.
For cleaning: https://www.loc.gov/preservation/care/record.html
Unfortunately 78s are not that simple for decent playback. They had variations such as speed (not all 78), groove width (thus different stylus widths), and EQ (nearly all were produced prior to the RIAA standard), among others. Here is an overview: http://midimagic.sgc-hosting.com/mixphono.htm
For various styli options and reasonable priced EQ devices, see this: https://www.esotericsound.com/index.htm
Of course it all depends on how many records you have, how much interest you have in getting the best out of them, and how much time and $ you want to commit. Have fun.