If you wish to execute maintenance to your Giantco Venus I then it is usually a good plan to have access to a Workshop Manual to use as personal reference in the event that you want to know tips to take out a specific component such as the Door and match it again in the correct manner.
Giantco Venus I Workshop Manuals will provide you with exact diagnostic info with regards to your car so if something is not working it will help you figure out what the issue is and methods to repair it. You can then evaluate if this can be done by yourself or if ever the job is simply too big you can actually book your Venus I in with a nearby friendly mechanic.
Giantco Venus I manual