Hooked Up Altima How Do I Take Off My Stereo In My Nissan Altima 2008? Trying To Hook My XM Portable Up.?

How do I take off my stereo in my Nissan Altima 2008? Trying to hook my XM portable up.? - hooked up altima

I try to go back to blow up the air radio. Even if you provide us with a few instructions on how to help connect the XM Inno) (laptop, it would also be useful, Best Buy wants to charge me $ 150. I have all the necessary elements for the installation, because I am on my last Nissan. (Titan) Thank you.