UPSC

If I explain, it will be so long. So, better go to UPSC portal. Download the exam pattern, syllabus. Whatever you need will be there.

About Kannada, you can check for the centers on UPSC portal. There are 4 GS papers+ 1 essay paper + 2 optional papers + 2 regional language paper. All the papers will be written from the same center.

Eco, commerce and accounts are the main subjects available.

Read employment news (it's a name of a web portal) it will give you the idea regarding the opportunities.

There are no shortcuts. But if you want to clear in first attempts, you need three things:
1. Three years of hard work
2. Complete dedication but still give yourself time to take your mind off, too much study might make you forget everything.
3. Luck. At the end or depends on by whom and how your papers will be evaluated.

BYJU's coaching is the best in Delhi. This institute gives best result every year in UPSC exams. Get in with this. All the best.

All you have to do is manage your time likewise. You should maintain a balance between both of them. Pay proper attention to the course curriculum in the college and invest rest of the time in the IAS preparations. If you are taking coaching for that, then it might be more difficult because of the timings. Try if you can adjust without them or try to get into weekend courses. This might be exhausting times of your life, but believe me, the result will be as good.

According to the eligibility criteria, the candidate should be a graduate or should have pursued a degree in any discipline from any recognised university in India.
Final year candidates can also apply.

Students from many fields and courses have got through UPSC CSE. You have every chance to get through it if you put in your hard work. There are general classes available for UPSC coaching. Try them.