Most people learn to cook by getting involved in the cooking which happens at home at a family level, long before they move out.
I've never "learned" a recipe in my life - I find something I fancy, often by doing a Google search for a couple of ingredients I want to use, and follow the instructions. If you specifically want a budget friendly recipe, put that into your search. For instance, I just Googled "budget friendly chicken peas" because I know I've got peas which need eating in the fridge. The BBC one's got white wine and risotto rice in, so no to that one because I haven't got either. Simple chicken and pea skillet...I can fake that, I don't own a skillet but a big frying pan will be fine, and some more Googling tells me that Italian seasoning is basically a bit of multiple sorts of green herbs, so it'll be whatever I've got some of. If it's a hit, I'll print it out and put it in my recipe binder. I could do it electronically, but the binder works for me.
It's not hard, and if a recipe doesn't make sense when you read through it, just find another one. Most online recipes don't use complicated techical terms, and many have stage by stage pictures.