If I could suggest an option that will be a great training system for the camera without spending a ton of money.
Use photo paper instead of film. The effective film speed is a lot slower with photo paper but there are some benefits.
First, the cost is far lower with 4x5 photo paper than with film. This way you can shoot more without worrying too much about the cost.
Second, you can load the paper in the film holders while using a safe light. This helps you to see what you are doing allowing you to learn.
Third, developing is very quick. Typically paper is developed in a minute or minute and a half. If you use Resin Coated instead of Fiber Based your wash times are easy as well.
Finally, you may find that you actually like paper negatives.
If you do decide to work with photo paper I recommend that you start with Ilford MGIV RC Deluxe.
Just a thought really. Learning to really use and enjoy large format takes time and will result in mistakes. That isn't bad, making mistakes is a way to learn, but making those mistakes is a lot easier to live with if the cost of learning is low.