I am planning to enroll in business online courses, and I wish to pursue HR as my main specialsiation area. Is this possible?

Yes, this is possible. You can pursue human resource management as a specialization area in business courses. A business course will help covered general subjects to broaden your knowledge base, and also allow you to gain in-depth knowledge and skill in a certain field. You can easily study this program from your home and not have to worry about taking classes at a campus.