Many first time car buyers are utterly confused as to which model of which make to go for. The manufacturers also paint a confusing picture of the car, its performance, its comparison with competition and so on and so forth. The sales personnel are very smart and they try to persuade the buyer with a host of offers and technical details of their product. Very few people do understand the "techies" of the engine, the performance parameters, etc. They basically go by what the sles person says, or those who are more wise discuss within their reference group or go through the journals.
The simplest way to decide on a car is to find out your NEEDS. You know your budget. Now you freeze your requirement like you want a fuel efficient car for city use within three lakh rupees. Or you often go for long rides and you want comfort. Or maybe you like to be always ahead of others, meaning that you want a power ride. Once you can match your budget with your requirements, it is easier to zero in on the make and model of your car. Do not hesitate to ask for a Test Drive as it gives you a correct feel of the leg room , the seat comfort, the window position , the controls & their accessibility, basic ergonomics, engine performance, handling, etc.
So, don't hesitate to discuss with the users, use the net for any information, don't let the sales person take you for a ride. Be confident and go ahead.
GOOD LUCK.