Use of Bitwise shift operators

A well explanation in two links below. May be it is very usefull for you.
http://www.cs.umd.edu/class/sum2003/cmsc311/Notes/BitOp/bitshift.html

another one
http://stackoverflow.com/questions/141525/absolute-beginners-guide-to-bit-shifting

there are two types of bitwise operator->
1:Left Shift Operator- <<
2:Right Shift Operator- >>

Left Shift Operator:-
It is used to shift at left side,but depends on the length u will specify to shift.
Example- My number is-8,I want to shift it 2 place at left
First calculate binary of 8,it will be-1000 when u apply left Shift
with the lengthh of 2,means u want to left shift 2 place,then it will left shift ur binary format like- 100000 and now ur o/p will be decimal of 100000 means (32)

Right Shif Operator:- Same 1000 will be,with right shift operator with length 2 will become-0010 means (2)

take a look at this:
this is refrence.

http://www.google.com/url?sa=t&rct=j&q=msdn+bitwise+shift&source=web&cd=1&cad=rja&ved=0CDMQFjAA&url=http%3A%2F%2Fmsdn.microsoft.com%2Fen-us%2Flibrary%2Ff96c63ed(v%3Dvs.80).aspx&ei=ZozTUL7DEYftsgats4D4DA&usg=AFQjCNHKOi9anCvNpE5rLJfeuH9eFng3CA&bvm=bv.1355534169,d.Yms