Hello, 

It's really good to apply for different certificate courses without waiting for your degree. The most important thing is knowledge. Even if you have your degree with you, the interviewer must question you about your knowledge. He wants to know how much deeply you understand your subject. 

There are various apps and online website available where you get certificates after completing your training. It's better of you do courses relative to your career which you would select afterwards or you can also go for your interest.  Apps like internshala, Udemy, coursera, various you tube tutorials give you best courses and knowledge with deep learning.

If you are in 12th then you must think for your future goals so you must look through this :

Careers360 is conducting the All India Talent search exam and if you are a student of 11th, 12th, or a 12th dropper PCM/PCB then you can test your knowledge and enhance your preparation by knowing your stronger and weaker areas and win prizes and scholarships worth ₹1.25 Crore.

If you are an Engineering or medical aspirant, it is a great opportunity for you. Take the test, perform the best, avail the scholarship and win prizes.

You can win exciting prizes such as:

₹50,000/- cash Prizes, Upto 100% Scholarship on JEE / NEET AI-Based preparation packages, Laptops, Smartphones, Amazon Echo, Careers360 Almanacs, Powerbanks, Upto ₹250/-  Paytm *Cashback offer

http://bit.ly/32QjPzy 

I hope this would help you. 

Good luck!!!