I think you're off to a great start. My advice is to keep it simple, cut the whites, ie. sugar, bread, pasta, milk and eat more healthy fats. If you read the intro-beginners guide above it really is easy to understand. You can tweak your macros as you go once you figure out how many carbs your body needs. As I am restarting, I'm keeping mine at 100, then I'll lower it in a few weeks and up the fat. I have a tablspoon coconut oil in my coffee with a bullet (bullet-proof coffee) to help with the fat and I will up that eventually since it can be hard to get over the omg fat in all the foods at first.

Good luck, start researching and have fun with all the foods. There is no wrong way to low carb and everyone has their own plan. Listen to your body.

I'm 5'10 and my minimum protein is around 60g for being inactive. Plug your numbers into something like this: http://keto-calculator.ankerl.com/

You don't have to do keto, but it'll give you a good idea for your protein and calories.

The way it gets your macros is generally:
Calories - protein - carbs = fat

It's fish roe I think - very pink very fishy, not sure about carb content though.

The bullet proof coffee is just coffee and a tablespoon coconut oil in a blender like a magic-bullet or nitru-bullet which cost about 50$ but you could also use an immersion blender or regular blender, its just easier to clean the little ones.
If you Google it you will see there are many different recipes, some add butter, etc. but this is another case where keeping it simple works best for me.