You need to go through the usual admission procedure. Fill the online/offline common admission form. For Stephens & JMC you need to fill separate forms that are available on their website. For Sports Quota- You need to clear the centralized fitness test first and then apply to individual college.
I have done the internship at Continent Impex Pvt Ltd in marketing. Average Intern salaries varied from INR 2000 to 5000 per annum.