Currently I am a BCA student. Can I learn python?

Yes, you definitely can learn any programming language you want. No one can stop you from learning. Infact, you should definitely learn Python, as it will provide you much information and knowledge. For leaning Python from beginning you can use following app: https://play.google.com/store/apps/detai

Ya. Craze of python is high presently. You should learn python. It is helpful to get the job.