dieticians are useless because anyone can read the nutritional info and the amount of calories in food. avg calories is about 2000 per day, men are slightly higher than women, and the heavier u r, the more calories u need. dont starve, try eat every 2 hours and at least 5-6 times a day. aim for calorie consumption of about 75% of what your intake should be.
personal trainers are pretty useless too, they just tell u how to use a machine or do an exercise. there are endless free websites for all this. may be advisible to join a gym if u still want to use weights, and since ur paying for it, ur more inclined to use it more often than just going for a jog. best time to work out is morning on an empty stomach, and at moderate intensity. this is where heartrate is at about 60-65% of its max. walking is widely acknowledged as the best exercise to lose weight as it uses more calories than riding a bike or other forms since u r carrying ur own weight, not sitting down. if an exercise is intense, u firstly burn carbs youve eaten then start breaking down muscle. when it is moderate u burn the carbs then start breaking down fat. intervals are also good for weight loss. if u are weight training too, do weights first, cardio last.
i believe supplements are also pretty important. protein powders help a fair bit in recovery and diet. get one that has no fat, a little carbs, and at least 75% protein. many also have additives like l-carnitine to break down fat, t3 fat mobilisers and thermogenic effects such as caffeine, guarana and green tea extract (although these are pretty dangerous if overconsumed so maybe best to leave these). additives are also available in capsules.
losing weight isnt easy, but is infinitely worth it