Classes vary by location and instructor. As stated before a carbine 1 is a good start. I have seen some offering a .5 class as well.
If he has a strict budget of $1k and chooses the AR that has been recommended he'll have plenty left for a few magazines, some ammunition, and a class. Most begining classes are around the $100 mark and require 200-300 rounds. That's $200-$300 for the day and the OP will have a good foundation.