In the middle stage, the exercise movements and methods are similar. You can practice one part every day, chest-arm-shoulder-leg-back-abdomen.
Be sure to pay attention to rest and nutritional supplements. You can eat eggs, milk, bread and the like in the early stage, and you can eat muscle-building powder and protein powder in the middle stage.
The most important thing in fitness is persistence. Don't expect to get good grades in a short time. Only 2-3 years of persistent exercise can achieve good results.
At the same time, pay attention to your own exercise to prevent muscle strain from going from less to more. It is normal to have muscle ache in the early stage, so you can rest for a few days without pain before continuing.