where should I ask questions about installing osmosis for openstreetmap? The help file says to use: Open Street Map talk or development mailing lists, but I am not sure which one that might be. Thanks!!!
It very much depends on your underlying OS. For Linux variants I’d look at switch2osm which has some useful guidelines for installing Osmosis.
For Windows it’s much murkier. Not many people use Osmosis with Windows and it seems very temperamental wrt to path variables.
If you can do what you require with the osmconvert/osmfilter combination I would recommend using them as they are rather more resilient tools (& this applies both to Windows & Linux). For me osmosis is most important for performing change updates to an osm2pgsql database & I think switch2osm covers this quite well.
Notionally the dev mailing list is the one to ask questions.
To answer the specific question, the talk mailing list is https://lists.openstreetmap.org/listinfo/talk , dev is https://lists.openstreetmap.org/listinfo/dev .