New to Reta, what are your tips for weight loss

Just ordered Reta for the first time and wanting advice from anyone who has successfully lost a decent amount of weight on it.

(21F 161cm currently 171lbs goal weight 121lbs) I’ve recently gained around 50lbs and gone from a very healthy active person to doing little to no exercise and eating pretty poorly but wanting to return to good habits again and lose the weight with the help of Reta in conjunction with healthy eating and exercise.

What is the the best way to go about nutrition and exercise to achieve faster results lose fat and gain bd build lean muscle. Feel free to share your own experience :)