First off, welcome. It's good to see you're doing your homework first. That will pay off for you and your snake, should you choose to get one someday. It's nice that you consider looking at rescues first. If there are known snake rescue shelters in your area, go and talk to them. The knowledge you get from them MAY far exceed anything you may read on a forum telling you about them. If not, start looking for reptile expos in your area. Try to go to as many as you can, and talk to the breeders there. Ask a lot of questions. Look at different snakes, hold different snakes. You may find you like something that completely surprises you.

Moving... there isn't really any special about moving a snake. If you're moving your house, just move the whole snake enclosure. If you're talking about getting the snake from one place to another, a very small plastic tub with a lid and some little holes in it for air is all you need. Just keep it fairly warm. I drove about an hour and a half to get my snake home, and it was in a little butter bowl type container on the front seat of my car. She did just fine.

As for what you will need otherwise, you're looking to spend 300-500 dollars for a complete setup.

cage/enclosure ($150-??) - I would recommend PVC, but others really like tubs. Just depends on what you like. Some like fishtanks, but I don't care for those personally.
Heater - ($40 - ??) an Under Tank Heater (UTH) will provide a warm spot for your snake. You can't go wrong with one of these.
Thermostat - ($50 - ??)This will control the heat coming from your UTH. You NEED one of these so the snake doesn't get burnt, but stays warm enough.
Hides - ($5-$20) two places for your snake to hide
Water dish - ($5-$15)snakes need water too.
Radiant Heat Panel (RHP) - ($50-$100)This isn't needed 100%, but it will make your setup better and manage your heat better, especially if you have a pvc cage or something with a solid lid.
Food - ($1-$2 per week)


Those are the basics. Putting them all together to make a happy envirionment takes some work, but it's not too hard. My advice, start out with good stuff from the beginning. I didn't, and now I'm upgrading to the good stuff and I won't be able to get my money back that I spent on the cheap stuff early on.

Does that help?