Best of luck for your purchase. Get at least your free services from the company, and get it maintained by the company if you want your warranty to be claimable. If you let anyone outside the authorized dealers so much as change your engine oil, it will void the warranty (in case of Suzuki) and then there will be no use buying a new car.
Apart from that, always change your fluids at the appropriate time and get your car regularly checked by the dealer. There are common vehicle inspection intervals like after every 40k kms etc, get it thoroughly checked at those intervals.
Read the owner's manual, and the driving handbook given by traffic police at the time of getting license. Most of the things you need to know about the car and the road are present in those two booklets. Rest, you will learn with time. Happy driving. 
