The push pull legs method of training is not new. It can be a great structure to beat monotony and a plateau in strength.
Find a basic layout of how a push, pull, legs schedule works. Example exercises and a little bonus HIIT workout.
The weights should be progressive and you can swap exercises here and there to beat boredom. It would be best to follow this type of training for at least three weeks to start seeing changes in body composition, along with a structured eating plan!