Can you please tell me what are the health benefits of omega 3 fats, and what is the suitable source to obtain the same.?

Omega 3's. Here is a link to information about omega 3's at the national library of medicine patient education website (for both health conditions and drugs or supplements): http://www.Nlm.Nih.Gov/medlineplus/druginfo/meds/a607065.Html you can obtain them over the counter at most grocery stores, pharmacies and even costco or equivalent.
Not proven yet. The complete answer is very technical, but basically omega 3 fatty acids are a class of fats that have an essential role in some body functions. The most critical o3fa is ala which cannot be synthesized and must be obtained from diet. Using ala, humans can synthesize a limited amount of dha and epa. O3fa can help lower certain lipoproteins and may reduce the risk of cv disease.