Is there a way to get to the path train going to Newark from the greyhound station

I'm sure there are several ways but I'm not aware of them.

either take the 1 2 E going downtown to 34th street, or walk down to 34th street it's about a 10 minute walk

Take 1, 2, 3, Downtown one stop to 34th Street Penn Station..then walk about one block to Path

Yes take the subway to either 34, 14 or world trade center and you can get the path train

A train not sure.