First time posting and brand new to the hobby --- sorry if this has been asked a thousand times before:

On my first layout, I purchased an EZ-Track (black) starter set and extra track (turnouts included). I am now learning about DCC and running multiple locomotives on one track. Did I make a rookie mistake and can't run multiple trains on EZ black tracks? Also, can analog trains only run on this type of track? EZ-Command can't work on these tracks?

Looks like I may have made an expensive error - I blame it on ignorance LOL! Looks like I need to save my $$$ for the grey tracks?

Thank you in advance and sorry for asking this question.