Hi friends i am new to this forum and i want to buy a radio and receiver of flysky FS 6CH TX/RX its mode 2
And I want to know what is mean by mode 1 and mode 2 can anyone tell me about it
plz  

99% of people in America fly Mode 2. Most people in India also fly Mode 2, but you will find many Mode 1 fliers as well.

mode 1 means throttle on right hand, in mode 2, it's vice versa.

Mode 2- throttle is one left stick.
Mode1- throttle is one right stick. Widely used one is mode 2.

Thanks friends to help me

In india, you widely see mode2 radios.
But you can change b/w modes in many radios.

Which radio do you want fs t6 or fs ct6b.

Hey friend its FS 6CH TX/RX MODE 2

There are two variants of FlySky 6 channel radios. The FS-T6 is the latest version and comes with an LCD screen for programming. The FS-CT6B does not have a screen and needs to be programmed from a computer and also has stick centring issues. It is old tech and I suggest you go for the FS-T6. Another good beginners radio is the Avionic RCB6i and you can use it in all 4 modes. Mode 1 to Mode 2 is controlled by a switch at the back.

FS T6 is best for beginners.

ct6B, FS-T6 and RCB6i, all of these can be programmed to use in Mode 1, 2 , 3, or 4
But, the default is Mode2 (all available in india).
With a small mod, the Mode can be changed h/w wise too. !!!

Their third radio from flysky
Its called i6