If you want to undertake fixes for your Beta M4 then it is usually a good idea to have a Workshop Manual for a guide should you need to know ways to remove a specific component much like the Brake Pads and fit it again the right way.
Beta M4 Workshop Manuals will give specific diagnostic info on your vehicle therefore if something is wrong it helps you discover what the issue is and some ways to resolve it. You will be able to determine if this can be done on your own or if ever the job is just too big you could book your M4 right into a local car garage.
Beta M4 manual