To get a lean body and loose body fat you have to do cardio. I usually have a whole cardio day two times a week, where I run, swim, do hit training, cross training... Your body gets used and adjust to the same kind of training so you have to change up your workout routine, pretty much all the time. That way you will loose more calories and burn more fat.
A whole body warmup that I do before every training session. It is very important to warm up your body before training to prevent any injuries and get better results. When warming up don´t stretch instead do some dynamic warm up like walking lunges or squat jumps...
5min powerwalking on the treadmill (7)
5 min jogging (9-10)
10 min on the stair master (14)
10 min cross training
To burn more fat I like to do HIIT training where you do specific exercises 10 times for 25 seconds, in between them 10 seconds rest. Going to the next exercise you rest 1 min and then do the same thing over.
10x25 with 10 sec rest = Burpees
10x25 with 10 sec rest = Squats
10x25 with 10 sec rest = Situps
I am literally dead after the HIIT session and I have trained for a very long time. If you are a beginner then I would recommend to start with doing 3 sets of every exercise and build it up.
When you are done then you have to do some stretching for your body improve flexibility and not be stiff. It also reduces sourness after training.