TAB question

[markalive]

I don't understand the tab shown below. Specifically, how do I play the "Am/G" , "Am/F", and "Am/E"?

Am Am/G Am/F Am/E Dm
Virgil Cane is the name, and I served on the Danville Train


Thanks for the help.

[smfulla]

Check out the lesson about slash chords here