If you choose to do maintenance on your own Suzuki GSX R 750 R then it is usually a good idea to have access to a Workshop Manual to use as a reference if you want to know proven methods to take off a particular component like the Brake Pads and install it again correctly.
Suzuki GSX R 750 R Workshop Manuals are able to offer specified diagnostic facts with regards to your vehicle so if something is faulty it will help you determine what the problem is and how to repair it. You can then evaluate if this can be done on your own or in the event the job is just too big you could make a reservation for your GSX R 750 R in with a nearby mechanic.
Suzuki GSX R 750 R manual