I have BBA degree and PGDCA diploma, I want to build my career in computer field, suggest me some good PG and certification courses.

Collecting degree is not enough u must have practically sound also. First of all i would like to suggest u that whatever u r doing do it thoroughly. Clear ur fundamental concepts. It should not be like that making second floor without any foundations. Industry requires Technically sound professional

If you are interested you can go for MBA IT from a good college giving you the best academic benefits of awide platform and exposure. Check it out from good college sites like XIMB, LPU, IRMA etc. LPUs MBA are going great I have heard.