RC1003 Fortune Telling

⚠️ This puzzle used on-site resources and might not be solvable by off-site solvers.

You make it to class a few minutes into the lesson, and apologise for the interruption. "No worries," replies your professor. "I knew you were about to come in late." She chuckles as she hands you a crystal ball. "Now, why don't you gaze into this and demonstrate what you've learnt from the last few classes?" Before your eyes, the mist in the crystal ball seems to morph into a variety of shapes. You swear you've seen these somewhere before...

What might come in useful in deciphering the meaning behind these signs?

You see many signs appearing before your eyes, but what's most important is what comes next.