Hey Ted,
I did this same thing about a year ago.
It's a lot more rewarding than I thought.
If you have prior experience with film it's not so tough.
First thing is to join
LFPF.
They buy/sell forum is the best for LF gear. You have to be a member 30 days before you will be able to use it.
Recently there have been some great lenses for exceptionally low prices.
Assuming this is for field work.
I would look for a wood field camera. They are fairly inexpensive, light and versatile.
It will be easier to sell if things don't work out.
Mono rails are cheap because no one wants them.
I ended up buying a new camera. When you are trying to get started it's tough to know what to get.
There is a lot to chose from. I chose a Shen-Hao. Cheap and fairly well made.
Just post here when you see something and there are a few of us that can answer questions.
From memory, Myself (4x5), Flea77 (4x5), Venchka (4x5), WClavey (4x5), Valerie (8x10), Tropicpine (5x7), HenrySampson (8x10) and DrewBedo (not sure but I think 8x10) all use LF gear. Speak up if I missed you...
After the camera you will need a lens and lens board.
Normal for a 4x5 is 150mm.
Choosing a lens can be very tough because there are many levels in each line.
For example, I went with Rodenstock.
You can get the same focal length as a re branded Caltar, a "N" series and a "S" series. Then a wide Angle "N' series. And then they sell other cheaper lenses, Greanors, I think.
The above are listed in order of price, cheaper to most expensive.
The "n" lenses are fine, should be easily found ~$300.
My first was a Rodenstock 135mm Sironar-S. One of the best ever made.
I paid $650 great price at the time, saw one for $475 this week.
Anyway stick with the name brands that are MC (multi coated).
The lens board will need to fit your camera, and your lens.
If you select a camera that takes a Wista/Technika board you will be good.
The boards come drilled for specific shutters.
For example a lens with a Copal 0 shutter needs a board with a Copal 0 hole.
Then a few Holders. 6 would be a great start.
Try to get modern Fidelity or Lisco. ~$10.
A dark cloth. I used a towel at first.
A loupe is nice but not required.
Then film.
A dark place to load film.
I used to go in my closet at night, A towel at the bottom sealed it enough.
Here are some useful links.
Everything I said and more.
A large format photography home page
Good source for new. Talk to Jeff, I think.
Lee had a bad experience with them. Most people don't.
Badger Graphic Sales, Inc
Very knowledgeable Guy. Good source.
Currently selling a ton of his own lenses. I think he said 100 or so.
Future Classics
Feel free to ask any questions.
Next time we go out I will try o PM you if you want to come along.