Congrats on your purchase. For anyone else just starting out, here's my suggestion:
The Whirley pop runs about $20. We used one of these for nearly a year before we upgraded to the Behmor 1600. using this stove top method really helps you understand the roasting process. You can really hear first & second crack, you have ultimate control over the roast intensity too. It's really fun to peek inside and say...maybe just a little bit darker..... Keep a log of your roasting times/bean handy to replicate roasts or improve on them one way or the other.
I can hardly wait to get back into roasting again, especially since we found a friend's grandmother has a coffee plantation in Honduras and will ship us the green beans!