I know it was explained already, but my stupid technologically unsavvy brain doesn't quite comprehend it yet. I went on coingateway to try and get a feel for how to use it for Wednesday, but when it asks for recipient Bitcoin address, what would I use? The address I use to deposit BTC to Bittrex or will I be given a specific one somehow for Blocknet? Thanks in advance!
Go to Fiat (Cash) tab

you are choosing your coin on the left and BlockNet on the right