Amibroker has a free evaluation copy which does not have any time limit for expiry. If you have knowledge of Ami, it would a nice option to use it. Getbhav copy gets you data from the exchange to the TA program. Adithya ji gave a right suggestion. Just recently I spoke to a trader using Ami from the trial version and it has not expired. Trail version states one month time but it is extend-able. Still if you are particular to use Ami, I have a original copy which I bought for some specific use but, unfortunate that the source became defunct. Hence, I can give you my copy for your study purpose for some stipulated time till you intend to purchase your own.
For study purpose have some stocks which are trending as well as non-trending. So that you can get to know how the market is when ranges come and how it behaves when there is a trend. NTPC is one stock which always stays in non-trend. While INFOSYS is a trending stock. Studying through sector classification gives you more broad picture.
Most of the front line stocks show exhaustion in their bullish patterns. Staying with the leaders will be a good idea as you have liquidity there. Instead of having to watch many stocks in your screening which will not provided you opportunity to give full attention. Have a selected few, getting to know their moves in and out. You can find some great opportunities in them.
Infosys at present has weakness on both long and short term charts. It has a potential to go between 2730-2650 range. If you have to trade in, choose to enter some where inside the range but only if there is some bullish signs.
My sincere advice would be to risk very low on any stock, which will ensure that you are still with the trade and also secure if the market goes against you. Bharti had a good entry into long trend this week at 310 levels. As the stock is trading below its recent long entry, you can think of adding this stock to your portfolio.
Again, the same caution - only give small risk capital to it. Once it starts moving up you can accumulate in phases. Telecom Sector has started looking up after a prolonged bearishness. Bharti is the leader in the Telecom pack with the highest market cap.