Here's my 2 cents, for what they're worth.
Firstly, good on you for making a change and taking your health seriously. Remember that your goal should be to find a sustainable way to improve and maintain your health. Don't be on a diet - just have a healthy diet.
While not the focus of the thread, exercise and sleep are also critical to your health. Don't neglect either.
Keto can be awesome (with some caveats). I eat keto most of the time these days, with good results. A ketogenic diet is one that promotes nutritional ketosis (as opposed to ketoacidosis, which is a complication of type 1 diabetes). Ketosis is (very basically) when your body preferentially uses fat as an energy source, breaking it down into ketones (amongst other things).
It's important to remember that low carb and keto aren't the same thing. A high protein diet is not necessarily ketogenic. Fat is the essential macro, because that's where the ketones come from. Once you have coaxed your body into preferentially burning fat, you will start to burn your fat stores, which leads to weight loss. Eating carbs triggers insulin release, which promotes fat storage (hence why it can be hard to lose fat on a low calorie, high carb diet). A lot of the benefits of keto eating stem from a reduction in insulin levels, which will help your blood pressure and blood glucose. Keto is also excellent for your cholesterol profile.
The two main issues with keto (imho of course): firstly, people often focus so much on fat that they forget about veggies and fibre. Don't do this. Secondly, not all fats are good for you. Consuming only vegetable oil is technically ketogenic, but not healthy. Butter, cream, grass fed meat, avocado, coconut, nuts, olive oil etc. Avoid vegetable / canola oil, margarine etc. That shit is poison.
Keto eating is only boring if you let it become so. You can make cauliflower "rice" and "mashed potato", zucchini pasta, nut meal pastry as carb replacements. Try to use fresh ingredients as much as possible. Anything that comes out of a packet has almost certainly had sugar added to it. Make your own sauces, mayo and salad dressings. It's not hard, and helps you dodge the hidden sugars.
If you're going to cheat (and you should sometimes), the frequency is more important than the amount. Frequent cheats (even if they're small) make it much harder to remain in ketosis. I try to be pretty strict during the week, then eat what I want on the weekends. You need to find what works for you. The longer I eat clean, the more I find myself avoiding carbs on the weekend, because I know they'll make me feel like shit.
Keep up the good work and keep us posted on your progress.
Everything is available here... except like... skittles. Lunch might be a problem since I go out for lunch usually or am provided it by where I'm at that day and always comes with a piece of bread or a serving of rice.
