Get yourself something like a B&J press camera. With a lens you shouldn't have to spend more then $100. It'll fold up into an easy to carry package. Looks like a flat lunch box. If you already have an okay tripod for 35mm it'll be good enough. You'll learn to deal with sheet film. Focussing on the ground glass. Front movements. If later you decide you hate LF then you can sell it and you won't lose much money. OTOH if you enjoy it and decide to move up the film holders and the lens will fit your future camera. Downsides with the B&J are the spring back which makes roll film use harder.
Pleny of other budget LF choices out there. If you shoot B&W film costs aren't too bad. Plus you're less likely to shoot the same number of frames with LF.