I didn't have any bitcoin at the time of the airdrop but would I still receive extra coins if I have some sitting in my wallet that I purchased last month before last month's airdrop? Or only those who have bitcoin get it? I want to be prepared with some bitcoin for the next one hopefully as I like this coin very much.
You need to link your BTC to receive free byteball.
If you mean you had some byteball in your wallet, then as far as I know, you should have received some extra byteball (you should have YOUR_BYTEBALL x 1.2)
I made a guide here:
byteballblog.wordpress.com/how-to-get-free-byteballs/I hope it helps