Dummy Guide on What's Needed to hook up Mini Mac

I have read many post on this issue, but am still utterly confused.

Current system Mini Mac will be hooked up to:
YBA stereo integrated amp
Oppo universal player
Madisound home made speaker system

1.) What exactly do I need to buy and how do I hook up a Mini Mac digital playback system to my current system for CD playback?

2.) How do I get CD's into it?

3.) Do I need external DAC and transport?

4.) How much memory in hard drive is needed?

5.) Can it operate with a remote?

6.) Will this system act like a music server?

7.) Is the sound quality as good as high end CD player?

Finally:

8.) I don't know what questions to ask, as I'm a real dummy on this issue, so please tell me what to buy (on a budget) and what to do?