Not to sure about first year pay, however as far as the interview goes,(and this is from current friends that work their said)
#1 typical HR and tech questions
#2 sim in a 707 i dont know why they use a 707 sim but they are just looking for a good scan as well as call outs instead of looking at epr settings
#3 after this you go to a american eagle AME for for a firsr class medical check out.
Thats about all I know about the interview process
Best of Luck