Try the 2KetoDudes podcasts. All of them have something useful but you may find this one http://2ketodudes.com/show.aspx?episode=89
Keto for absolute beginners really helpful. Then I suggest you look through the topics to see which one might be more useful.
Also, Lean Body Mass. This is the parts of your body that is not fat. Bones, muscle, ligament and organs (if not unhealthily fatty) make up LBM.
How much fat you can have depends on you. Limit your carbs, have enough protein for your requirements then eat fat until you are full. This might change. The best to have are ones from animals- fat with the meat or dairy based (full fat ones, cheeses, cream, butter). Also avocado, nuts, olives, olive oil and fish.
Ones not to have- oils from seeds or grains like canola and sunflower these are industrial seed oils and have lots of omega 6 which we need to limit.
Water intake sounds about right. You might find that if you are moving to low carb you may need more salt as the body is more likely to expel it more on low carb. So if you are more or less thirsty just adjust your intake of water.
Forth- yes that is the best way to start- limit carbs to less that 20g.
Good luck and look out for the other benefits, your body might needs to fix some of your systems before you see a big fat loss. Or it might not and the weight might pour off.
