Hi,
@Amigamia,
OK, I used to have a A1000, on the front panel in the center is a removable piece of plastic, under this you can put either a 256k or a 512k expansion board. On one side of the Amiga 1000 there is a slot for an expansion buss, there should be a long slender piece of plastic that can be removed to show this port. Here I used a Phoenix 2 megabyte ram expansion card and a Supra hard drive board. If you take off the top cover on the inside you will see the 68000 chip, by following the instructions of the boards manual you can plug in various different boards, but watch what you buy some of the boards need the sockets on which other boards plug in. For IDE I would check out Buddha to see what they have, for scsi, I liked the Supra and probably go with that even today. The 68000 plug ins, the rom board is nice but I cannot remember the name, it came with roms so you could ditch the kickstart disk and also added I believe one meg of memory. I liked the 2 meg expansion board and kept my Kickstart disk, it kept other computer people from getting into my Amiga because I always kept my Kickstart disk with me. Hoped some of this helped.
By the way when I moved from Florida up to Pennsylvania for my new job, I forgot that my A1000 was out in the garage, I told my wife to throw out all the old computers in the garage, and guess what she did and my C64, C128 and all the software.
Well so is life.
smerf