Hi Natural64! I totally understand being nervous and overwhelmed; after all, hip replacement is considered a "major surgery". I just had my right hip replaced on 7/15 and am facing a left hip replacement, if all goes well with the right one, on 9/9.
Regarding my 7/15 surgery, I was a nervous wreck beforehand and would burst into tears at any given moment. What I did to combat my emotional state and make me feel productive was go into high preparation mode. You will need to get some durable medical equipment; check out Amazon for that. Believe it or not, there is some fun to be had with the equipment. The walkers are pretty standard and boring so you can always get some glitter tape to decorate yours. You can also find some pretty snazzy canes, such as leopard print and Hawaiian flowers. Finally, order yourself a super extra-large T-shirt for hip replacement patients that can double as a night shirt because you will want comfy clothes in the hospital. Yes, they exist. My avatar is actually one of the hip replacement patient designs Amazon offers. I also suggest ordering a "hip kit" that comes with grabbers, sock donner, long handled sponge and long shoehorn. Trust me, grabbers will be your best friend, especially if bending over is one of your precautions.
Keep in mind that this is a very supportive forum. Folks have been/are in your shoes, and have a wealth of knowledge and tips to share. As enoughpain stated above, you have come to the right place.
Good luck and continue to keep us posted! Look forward to reading your recovery posts!