I have an Alpine 9830 and am going to purchase THESE coaxials.

I am completely new to car audio and have no install experience. So what exactly am I going to need to do to install the head-unit and speakers?(I'm planning on adding amps and a sub later)

Is there a step by step guide for installing stuff in a contour that anyone can guide me towards?

Will I need to get new speaker wire or should the stock wire be fine?

What kind of wiring harness do I need to get?

I'd appreciate any help you guys can offer.

Thanks in advance.