Nifty trends- at particular times?

The nifty suddenly changes trends many a times during the day. I have noticed that after 2.30 pm it gets into a trend that it does not change normally. Has any body noticed any other timing when it changes trends / or gets into a trend for some period at a particular time/times ?

Live intraday tips for nifty?

Can anyone guide me, on which site can I get live intra day tips for nifty, free of cost. I am new to stock market and don’t want to invest thousands just to get tips which might not be 100% accurate.Thankyou in advance.