Hi Samanvita,
There are 2 ways you can learn SAP ABAP.
1) learn through tutorials online. This will be kind of a self-study. You can find many materials online for the same.
2) You can get online training for ABAP. There are some real-time consultants who also give trainings in their free time. You can get in touch with them. This is a better option according to me, because I see that learning in this way is a bit faster, and your doubts get clarified immediately.
I can suggest a a real time certified consultant with 10 yrs exp who gives trainings this way and has already trained many batches of students.The only thing is he can give online training from his home. If interested, you can mail me at niloufernaaz@gmail.com
Regards,
Shahnaz.