Hello barathi7 !
Your written words of "...will pray to God and let him show the right path for us...." touched my heart because I am also seeking a path to return to nursing work! Yes! Amen to your prayer!
I think you wrote that you did check with the board of nursing in your state to learn what the requirements are for working as a registered nurse in your state. Yes! The state board of nursing in one's current home state seems to be the key resource to learn steps to be eligible for registered nursing jobs
in that state.
Regarding review books, I agree with one of the other writers on this site that if you are required to take a refresher course there will probably be recommended nursing reference books within that course.
If you are not required to take a nursing refresher course, I have found very good quality review books at the bookstore here called Books A Million for prep for the ususal required written tests for job applications for registered nurses(meds test and general nursing test)---best picks of review books for me were pharmacology review books and NCLEX review books with sample questions and answers with good rationale for best answers(zoom in on ONLY most common stuff such as med surg and zomm in on ONLY twenty or so key meds such as digoxin,lasix,insulins)---these review type books helped me oh so much to actually pass the written tests for the private duty R.N. job I am currently applying for! Good luck in your experience in India and best wishes on your efforts to meet requirements to return to R.N. work when you return to the States! Peace to you.