Hi Jay. Welcome to the forum. Depending on how much volume you need, like if you're only going to print your average RC car part, I would suggest an Ender 3 V2. You do have to assemble it, but it's not bad. There are larger format printers, but as the size goes up, the price goes up. Anycubic has the Chiron, which is a large format printer, and is pretty cheap.
Are you mechanically inclined? Are you good with electronics? There will be times when dkills in these areas are needed, but for the most part, once you get them running all you need to do is make small adjustments to your slicer settings or print bed.
As far as programming them, first I would suggest you learn some basic 3d modeling. You can download a copy of Autodesk Fusion 360, which is free for hobbyists. Check out a guy named Lars Christensen on Youtube. He has some great beginner tutorials for it.
From there, you will need a slicer program like Cura (free) or Simplify 3d (paid). There are others, like Prusa has a slicer program, but I have never used anything besides Cura and Simplify.
If you need further assistance, shoot me a PM. I can also get you my phone number if you want to chat. I can talk you through the build, setup, and first print no problemo.