You can check the website of the respective colleges you want to know about. All the process from filling the form to paying the fees is online.
You have to go to the college to show the 10 and 12 standard mark sheets. Keep your passport photographs and your certificates, these should be self attested. Fill in the online application form. Check the schedule for counseling at the official website.
The admission process is based on merit and first come first serve mostly for the BA department. The choice and allocation of the subjects will vary according to the marks scored by the students in their 12th board exam.