how do I replace my spark plugs on 2002 Volvo V70 XC

I would like to change it my self

Asked by for the 2002 Volvo V70 XC
If you're going to do your own maintenance, I suggest you subscribe to one of the online repair manuals here:
And search Youtube for a few video's that show the proper way to replace a spark plug. In other words, be informed before attempting this job, these cars are not as simple as they were in the past and you can get yourself into trouble if you don't have an idea of what you need to do. Good luck.