[PLEASE HELP] can any current ER analysts help me answer these questions?

This might sound really stupid questions but i really need to know those to get a better sense of ER

  1. how do analysts generally predict earnings revenues? by comparing with past performance?peers in the industry? any financial models?!!
  2. given this difficult time, what are some challenges facing equity research analysts?? how would equity research analysts gather information?

please please help out!!