Can you attach a website to a button. In other words, if a student gets something wrong, could I have a button set to where it linked to a video tutorial in my Google Drive?
not currently, no. What you can do right now is have the link appear in the note after they’ve pressed the button.
Would that link be clickable, or would they have to type it in a new window?
Totally clickable. Assuming the link is good.
Are you able to hyperlink? Or do you have to cut and paste the entire URL into a note?
No hyperlink, sorry. Best bet is a URL shortened right now