Another option is to have a go at some aerobatics first, that is to say get someone to fly you some gentle loops and rolls etc. In many ways they are less 'attention getting' than spinning and you will get used to unusual attitudes (i.e. being upside down) before you get onto spinning, the entries to which, particularly, can be very disorientating to the uninitiated. And before others comment, I am not talking about getting taught aeros before spinning, only experiencing them. Besides which, aerobatics are the best thing you can do in an aircraft (on your own anyway).
Cheers DB6