Depends on how serious you want to get about it. If you want to lose weight without changing your diet, I'd recommend IIFYM. Use the calculator to figure out your macros:
https://www.iifym.com/iifym-calculator/
Then eat whatever you want, as long as it fits your macros for the day. The logic behind it is:
1. You can only eat for three kinds of results: weight loss, weight maintenance (stay where you are now), weight gain. Pick a goal.
2. Your body is unique and has a specific daily power requirement (i.e. how many calories you need to eat/drink per day in order to lose, gain, or maintain your weight, depending on which of the 3 is your goal). Total calories for the day controls whether you lose weight, gain weight, or stay the same. If you eat fewer calories than your body needs over time, you will lose weight. If you eat more calories than your body needs over time, then you will gain weight. Technically, the source of the calories doesn't matter in terms of results (i.e. losing weight).
3. Your body digests 3 macros: protein, fat, carbs. Again, source doesn't matter for results. Those 3 macros add together to create your calories for the day. 1 gram of protein = 4 calories, 1g carbs = 4 calories, 1g fat = 9 calories. The IIFYM calculator will tell you what your numbers are based on your gender, height, age, goals, etc.
4. Use the IIFYM calculator to get your numbers for weight loss. Once you've achieved your target weight, re-run the IIFYM calculator to get your new numbers for weight maintenance. And...that's it.
Counting is annoying when you started out. The more accurate you are, the better your results will be. Get a food scale ($15 on Amazon), get a macros app for your phone, start reading labels. It's not rocket science, but it does take some effort for the first few months. Again, it depends on how serious you are about it. Eating for your body's macros requirements takes some getting used to - not because your diet has to change, but because you have to be conscious about hitting your targets for the day. It's not nearly as easy as just blindly eating whatever you want all day long, but then again, you don't have to change your diet & you don't have to stop eating your favorite foods. You just have to give your body the fuel it needs to meet your goals. It works better than anything else I've ever used or seen anyone else use before, partly because there are no cheat meals or cheat days or negative connotations with food. Also, even when you're eating at a deficit, it's not like you're going to be starving yourself...you'll be surprised at how much you actually need to eat during the day to feed your body properly. Also, meal timing doesn't matter...eat 3 square meals a day, eat one big meal a day, eat within a window if you like intermittent fasting, eat 6 smaller meals a day, doesn't matter, as long as the numbers add up at the end of the day. Here's some stuff to read & watch:
https://nicolecapurso.wordpress.com/2014/08/31/how-donuts-gave-me-abs-an-80kg-snatch/
http://www.cnn.com/2010/HEALTH/11/08/twinkie.diet.professor/index.html
https://www.youtube.com/watch?v=ji95UYpVsjo &
https://www.youtube.com/watch?v=Ebx7nfa7K1U
https://www.youtube.com/watch?v=evcNPfZlrZs
I wish I had learned about IIFYM ~10 years ago when I started my first thread in H&F. I don't regret trying all of the different stuff I went through, but this is so much easier & I can still get a Whopper & eat a Snickers bar and be just fine. And I do recommend eating more natural stuff, obviously - meat, fruits, veggies, grains, seeds, nuts, greens, they're all good for you. IIFYM isn't a free pass to eat junk food all day, although you can do that & still get results just fine, but IIFYM is nice because you don't have to change what you normally eat, so it's not a complete diet change or anything, which is a very hard thing to do for most people.
Anyway, join the Facebook group & look at the progress pictures & before/after pictures that people post. Endless success stories. Again, it depends on how serious you want to get...getting conscious about the macros you're putting into your body is annoying to do when you first start out. Counting is lame, but it gets results & you can still eat the stuff you love. There's no single magic food out there, it's just about getting into the habit of tracking what you eat & making sure you're feeding your body the correct amount of protein, carbs, and fats to reach your goal of weight loss, weight gain, or maintenance. That's it. Easy but annoying at first.