How to change the film speed of a Nikon F65 film slr camera?

I just started using a Nikon F65 film slr camera and need a bit of help with it. I've used a slr film camera before but it was all manual. Do I need to put in the film before I change the film speed? And how do I do so?

The F65 supports DX coding (not to be confused with the DX sensor/lens format) - it will automatically detect the speed of most films. Check the box of the film if it's "DX coded".

You have to buy film of what ever speed you want, 200, 400 and so on. It's not like a digital camera that changes speed for you, you have to buy the film at a certain speed.