BCA

You have the following options after BCA:
1. Do an MCA (which I recommend not to) which is a 3-years course again. The curriculum is almost as same as BCA course so you end up studying same things that you studied in BCA. Plus placement for MCA is not that great these days. So many colleges are shutting down their MCA department due to very low demand. Overall BCA+MCA options is dying in India due to less acceptance from IT companies or a very low package.
2. Get into job oriented courses like Wipro WASE program. It's a 4-year program (on the job) which Offer M.Tech in software engineering degree at the end of 4 years by BITS, Pilani (Wiprohastiedup with BITS, Pilani). You get monthly Stipend of 13500,16000,19000, 23000 in 1st, 2nd, 3rd & 4th year respectively. Note that having studies Maths in class 12 is compulsory for this program. Selection process via test, interview.
3. Another job oriented program is by TCS called as Ignite. Again an on the job 3 years program which offers MCA in tie-ups with Sastra University.
4. With new age e-learning, BCA students should also look for doing Open Learning courses from websites like Udacity, Simplilearn, Coursera. It offers various new age courses like Mobile & Software development, Cyber Security, IT Service & Architecture, Cloud Computing, etc.
5. If not software/IT (it's not your interest), then look for options outside like social work, management, fellowships like YIF, journalism, law, etc. For this understand yourself by taking a psychometric assessment test and talking to a career counselor.

You have the following options after BCA:
1 Do an MCA (which I recommend not to) which is a 3 years course again. The curriculum is almost as same as BCA course so you end up studying same things that you studied in BCA. Plus placement for MCA are not that great these days. So many colleges are shutting down their MCA department due to very low demand. Overall BCA+MCA options is dying in India due to less acceptance from IT companies or a very low package.
2 Get into job oriented courses like Wipro WASE program. It's a 4-year program (on the job) which offer M.Tech in software engineering degree at the end of 4 years by BITS, Pilani (Wiprohastiedup with BITS, Pilani). You get monthly Stipend of 13500, 16000, 19000, 23000 in 1st, 2nd, 3rd & 4th year respectively. Note that: Maths in class 12 is compulsory for this program. Selection process via test, interview.
3 Another job oriented program is by TCS called as Ignite. Again an on the job 3 years program which offers MCA in tie-ups with Sastra University.
4 With new age e-learning, BCA students should also look for doing Open Learning courses from websites like Udacity, Simplilearn, Coursera. It offers various new age courses like Mobile & Software development, Cyber Security, IT Service & Architecture, Cloud Computing, etc.
5 If not software/IT (it's not your interest), then look for options outside like social work, management, fellowships like YIF, journalism, law, etc. For this understand yourself via taking a psychometric assessment test and talking to a career counselor

For BCA first semester, these reference books are recommended:
Mathematics
B.S. Grewal, elementary engineering mathematics
H.K. Dass, Advanced Engineering Mathematics, S. Chand & Company
Technical Communication
Raymond Murphy, Essential English Grammar- A self-study reference and practice book for elementary students of English , Cambridge University Press
Manalo, E. & Fermin, V. Technical and Report Writing. ECC Graphics. Quezon City.
Introduction to Programming language C
Yashwant Kanetkar, Let us C
Herbert Schildt, C The Complete Reference
Introduction to Computers & IT
B.Ram Computer fundamentals Architecture and Organization,New Age Intl.
Alex Leon & Mathews Leon, Introduction to Computers, Vikas Publishing.
Physics
S.K. Gupta, Modern ABC of Physics, Vol1, Modern Publishers
S.K. Gupta, Modern ABC of Physics, Vol2, Modern Publishers.