Thank you SG Sir,
I read the below mentioned reply to Saivenkat and then I re-read your earlier reply...
"
In the same way over some period....you will get the hang of whether it is going to move down or up....down is usually followed lower & lower 'Ask' when the the spread narrows... observe and practice and you will perfect...with few shares at a time...."
And suddenly it seems a light has dawned upon me ..... I understand that the question on selection of script is irrelevant. The simple thing to follow is the difference in the bid and ask price and the direction the ask price is moving...this is the first step...there may be other things to look at after this. If the ask price is increasing and the spread is decreasing the likelihood is that the price would shoot up... and visa versa.
Please let me know if my understanding is correct
or am going to get the stick