Well, I really hope you have a rice cooker already for that part, at least.
I'm not as familiar with the process of cooking Korean food, specifically, but finding a decent cookbook can make the world of difference. I have Vietnamese and Indian ones that describe the methods of cooking, and the pros/cons of taking certain shortcuts or using sub-optimal cookware or ingredients that might be more readily available in different regions, at least when it matters.
On occasion I will make something more involved, but I usually like recipes that require minimal active prep time. Usually I end up making dishes that sautee the ingredients and spices in a pan, and then add water to boil down the mixture, which can be used to create textures anywhere from mushy to firm, depending on the time, amount of water, and ingredients. It also requires less babysitting than anything cooking in primarily oil or dry heat.
At the end of the day, even if you can get something that is "close enough" to something from a cookbook, that's pretty good.
Something like this book might offer some good ideas, but I've never tried it, and it looks like the reviews are hit/miss depending on ingredient availability in your area.
If you'd be down for trying some Indian food, I could also suggest Madhur Jaffrey's Vegetarian India, which has some very simple and inexpensive recipes that cook well in large quantities.
Also, buying curry pastes/sauces can save a ton of time, and possibly money. I've used Indian and Thai ones to make curries very quickly, oftentimes with tofu or fish with a bit of onion, and served over rice.
No shame in occasionally eating out, though.