Hello Tamilselvan,

Yes , you can very well directly apply and attend state counselling without registering for All India Quota . I see you are from Tamilnadu, so as of now no official dates have been declared regarding the counselling process , but once the date is announced , you need to got to the respective official website and apply online. After applying , the print out copy of your application along with the required documents , should be sent to The  Selection Committee by post. The  registration fee for common candidates is 500 rupees and for Ex-servicemen/sport/PH candidates it will be 100 rupees . This amount will be non-refundable . Please go through the below article to know more about the counselling process and keep yourself updated regarding the counselling dates:

https://medicine.careers360.com/articles/tamil-nadu-mbbs-counselling

Hope this helps