Before this get complex hear me out.
You are obese and need to understand that this will take a long time.
Simply eat less, a lot less, a majority of which should come from lean proteins (beef, chicken, turkey, fish, eggs etc) and vegatables with healthy fats like extra virgin olive oil and fish oils.
DO NOT get into extreme supplementation or diets.
Exercise regularly using simple compound weight training exercises. DO NOT get into extreme amounts of movements or techniques. Just do something basic. Walk, walk, walk...for cardio. DO NOt get into these HIIT methodolgies and extremes of the like. Simply walk as fast as you can for 60 mins a day. If you like do more.
The key to success is doing something that you can and will sustain for the long haul...a lifetime. Keep it simple and you will be able to succeed.