I am planning to move to Greece soon and purchase a car there, suggest a service with road rules?

If you're planning to drive in Greece, check out https://aktis.rent/en/blog/driving-rules-in-greece . This resource will help you understand local driving peculiarities, such as narrow roads in mountainous areas and the frequent maneuvers of local drivers. The site also has tips on parking regulations and road signs. It is the perfect companion to avoid unpleasant situations and travel safely in Greece.