I think it really depends on your preference. If you need the structure of pre planned meals and an exact plan to follow, check out www.ruled.me
I know there are some free recipes and meal plan resources on there. I'm sure there are other places to get free ones too, but I am the opposite person that needs to be able to just do what I want from meal to meal, so a plan and even recipes are annoying to me. Lol
If you want a "plan" that's not exactly a meal plan, just go with the idea that certain foods are simply not foods for you anymore. Like, don't buy fruit or bread or potatoes or rice or sweets and things like that. Only buy, meat and cheese and green leafy vegetables and healthy fats like butter, coconut oil, olive oil and stuff like that. Then make whatever you want from the food that is "your food". I say it like that because that's the method that's worked so well for me. Those other things are no more my food than a bag of kibble is. So I don't have to try to avoid them because I simply wouldn't ever consider eating them in the first place. They aren't food for me.
This way of following a no-plan, plan, has made buying and cooking food very simple for me. I know what is my food and what isn't. I'm never bargaining with myself to fit a tiny bit of dog food in here and there. Lol

I'm in the camp with @KenSmith108 I stopped eating the carb stuff I make for the rest of the family for dinner. For example, last night was stir fry - normally I make the rice with everything else. Last night the rice was made separate and Rowdy added the rice to his plate, I ate the meat and veggies. I try to keep my carbs under 20 so even the veggies I'm very careful about.

Personally, I've done low carb before, but I never did low carb, high fat, following the whole food, healthy eating style of the ketogenic diet. I find adding in the fat and cutting down on preservatives is making my weight drop. I am in the >300 (currently 142kg) club as well, but I'm finding myself closer every day to leaving that, and I'm on day 13 and loving it. I start my day with a high dose of fat in the form of a bulletproof coffee. It's made the world of difference in how I feel since I started that. Especially, if you're a coffee junkie, it's a great way to start your day. I do mine in the form of a cup of black coffee blended with a tablespoon grassfed butter and a tablespoon of MCT oil (your friend on this diet). Feel free to add me as a friend so you can see my food diary.

I use this site to set my macros:

http://keto-calculator.ankerl.com

For me, it's easiest to stick with simple meals. I have about the same thing for breakfast daily, and I can make up 4 days worth at a time so it's easy to grab-and-go. Lunch and dinner are 4-6 oz of meat, 1-2 cups low-carb veggies, and 1-2 fats.

Boring meals keep me on track, and I live alone so no one else cares. It's easier to log into MFP because you can set up your standard meals. It's easier to cook in bulk-- I'll throw a bunch of meat in the slow cooker, then partition it out into 4-oz and 2-oz portions, keep some on the fridge for the next few days and freeze the rest. It's easier to shop. It's just easier all the way around for me

If I want something different than usual, I'll plan a meal out at a restaurant or host a friend for dinner. I've found that focusing on the company, rather than the food, helps keep me from binging when I eat out.

Congrats on your decision to change!

I started at 315lbs and the best advice I got back then was to keep the carbs as low as you can go (I was at 20g/day) and eat everything else to satiety. That is enough to ease your body into transition, you'll have plenty of time to fine tune everything as you progress.

Good luck to you!

::flowerforyou::