I appreciate your inputs.. thanks
It took me 3 weeks to recover what I lost on day 2 because I bid too much for a particular Adgroup.
Unless you have very deep pockets, it's probably a good idea to start your bids very low and them increase them as necessary to achieve the level of returns you're seeking. actual performance can vary enormously from topic to topic, site to site, Ad to Ad and keyword to keyword, so it's hard to suggest a good figure.
AdWords will "tell you" if your bids are too low for your ads to show. Once they are showing, expect the performacne to improve over the first few weeks.