This may be a ridiculous question, but I've had problems with film photography and blank rolls of film in the past and just shot a test roll on my Holga, not intending it to be processed, to see what the film looked like once you've taken photos with it. Does anything show up on the film itself before it's processed? How can I know if it's taking photos properly?
I'm an epic noob, I know. I just want to get the hang of it haha.