Yes you will need 2 SATA cables to install both of these drives, you are correct. Normally though, most motherboards I have seen will come with these cables. Do you have your motherboard, or are you waiting for it to be shipped to you? If you already have it, maybe check the box to see if you missed the cables.
They are pretty simple to install. Personally I don't know how to do a "dual drive" system, so I won't be much help. But I can tell you that installing an HDD is really simple, and from what I hear, an SSD is pretty much the same.
It depends if you're booting from a disc, or USB drive. But basically for a single HDD, you go into your BIOS, make sure you select the appropriate boot device (USB if you're using that, or Optical drive, if using a disc), then boot up, run windows installation, and you will now have windows on the drive.