Dietdoctor Lchf website is very good as pp said.
Marksdailyapple blog, robb wolf “paleo solution” blog both also very good. All the info is out there for free, but there are books, and I find dietdoctor subscription site well worth it.
It takes a bit of getting used to (you may feel quite unwell for a few days with “carb flu”), after the first 2 or 3 days, if you are hungry, eat more fat, if you are still hungry they you probably need to cut carbs back even further (I’d say go for less than 20g carbs per day, particularly in the first weeks of low carb eating).
Don’t spend time and money trying to create low carb versions of junk food and treats- just eat real food that’s naturally low in carbohydrate.
In a nutshell- eat mostly natural unprocessed foods- meat, fish, eggs (cheese, butter and cream if you eat dairy), green leafy stuff and other above the ground vegetables. Have some seeds, nuts and berries but not too much. Have some onion, carrot, tomato, but not too much. Have some sweet potato, but not much.
Avoid white potato and all cereal grains (including oats, rice and corn/maize, and anything made with processed grains (flours, cakes, breads etc).
Drink water, tea, coffee, very dry wine (low sugar content), and spirits.
Avoid beer, lager, sugary mixers, sugars coke, fruit juices etc.
The results can be absolutely astonishing (both heath and weight wise), it’s a long term WOE (way of eating), and not just a diet- well work giving it a month or two to see how it works for you IMO 