This a thousand times. My wife and I cook most of our meals at home and whenever someone asks me how to get started I always recommend a good quality (read $20-30) carbon steel wok that will last for decades if cared for properly. The ease/flexibility of cooking in it is amazing and healthy stir fries are close to idiot proof for beginners so long as they follow a couple of simple rules.
EDIT: the other tip I generally give is learn the base of a vinaigrette (one part vinegar to two/three parts oil) and it will absolutely slash the amount of worthless calories and sugar you consume. When trying to eat healthy so many people will prepare a salad (good) but then drench it in store bought salad dressing without reading the label (bad). With the base recipe you can experiment with different vinegars and acids (e.g. lemon juice) plus flavor boosters like garlic and shallots which will produce a super tasty and healthy dressing at a fraction of the cost of buying something at the store.
Then one day, my wife had prepared salad fixings for dinner and I assembled a bowl with lettuce, tomatoes and cucumber, topped with a small handful of peanuts and sesame seeds and a little cheese... not a bad meal, but I needed a little dressing. I enjoy dressing as much as the next guy, but I do try to use as little as possible.
Anyway, the lettuce was pretty wet and I had a flash of insight... I just sprinkled the ranch dressing powder directly on the salad and it worked great. You get the tang and savor, without all the fat and sugar.
I bet I could eat an entire box of hamburger helper. I know I could eat three cheezeburgers at a sitting. Once in a rare while I indulge in junk food like that. But beef tenderloin costing maybe $25/lb naturally tends to take care of the whole "technically you only need 2 oz protein per day" or whatever it is exactly.
Yes Chinese restaurants are famous for using interesting (gross) parts of the chicken to increase profits, but for how little chicken I use in a family sized stir fry I can afford a clean probably not salmonella infected boneless skinless organic chicken breast.
I mean, sure, for $10 I could eat hot dogs until I puke and/or gain two pounds of fat, but I'd rather eat a nice small grilled steak.
As a rough guess the more you use your grill and wok and the less you use your oven, toaster, and microwave, the healthier you're probably eating. Also a wok looks expensive as an experiment, like a couple meals worth of food, but unless you do something crazy it never wears out and its cheap compared to something like a complete all-clad stainless steel cooktop set. Also if you're trying to learn how to cook, most vegetables will not kill you with food poisoning no matter how hard you try, so some vegetarian stir fries are a delicious place to start.