Hyderabad

Hi,
You need to directly apply to the college as admission are based on merit.

College change or university change after first-year is completely dependent on the college and university norms, some university allow it and some won't plus you need to have good scores in the first year to apply for the same. For further details, contact the college authorities.

Confused in terms of courses after BCA. You search and confusion rightly ends here. There are a lot of options available in terms of study. For those interested in IT and computer applications, MCA is a perfect choice. There are also various post-graduate Diploma certifications for aspirants wishing to specialize in various skills. Take your pick of the best PG degree and diploma programs in terms of courses after BCA.
List of the best courses after BCA:
MCA, M.Sc IT, M.Sc Computer Science, MBA, PGDM, PG Diploma, Certificate courses in Programming, Hardware & Networking, Web and Graphic Design.

You can appear for LEET examination to get a good college, it will help you to get directly into the second year of engineering and it will help you to save your 1 crucial year.