Asslamo Allaikum,
Welcome to a family of 1.5 billion; its rather big so it will take time to get to know us; but we are all with you in spirit & prayers. Don't forget to call upon us when if you need anything.
I would like to recommend a site to you run by an organisation in India called IRF (Chairman: Dr Zakir Naik)
http://www.irf.net/irf/main.htm
You may find some very useful material on giving Dawah to Hindus and other Non-Muslims. I particularly suggest you watch the DVD "Similarities between Hinduism & Islam"
Best of Luck