Welcome to the group! I am sure people will give you plenty of advice on husbandry and feeding, all you need to do is ask. Careful with the lamps, they can dry out your enclosure, just monitor the humidity to make sure its staying up.

Feeding frozen thawed isn't all that difficult. Make sure it's thawed, then use a blow dryer to warm them up a little more. Then offer the food with a pair of tongs, do the death dance IE: wiggle it to get their attention, but to not force it to pay attention... you'll scare them that way.

You should see some interest. If they do not strike in the first five minutes or so I leave it there and close up the tub/enclosure, leave them be for awhile and see if they will take it on their own. Typically they do... though sometimes a new snake can take awhile to get accustomed to things and comfortable enough to eat. So don't be too stressed if he doesn't take the first rat.