Thank you so much AngryDwarf, I feel like a weight has been lifted!

One last question though, how long did it take Bitcoin Core to finish synchronizing for you? It says for me it will take 40 hours... I just really want to purchase something now!!

Hi I don't even know if I am posting in the correct area. I just really need some help right now.

I downloaded Bitcoin Knots and I clicked file > receiving addresses > new > then had the money sent to that address. I then went on youtube and saw people doing it completely different (ie. they were getting their address from the receive tab, whereas I got mine from the file tab in the top left corner). Have I just wasted all my money?