Hey guys is it essential to program esc or not. I mean can I use esc as I purchased it .
Plz help me I don't wanna fry my first motor or esc.

Depends what you are using it for and what firmware it has. All ESCs need throttle calibration and may require more settings to be changed depending on the firmware/ application.

thanKs for replying
I hv hobby king 2212 and pentium 30A esc with FS ct6b radio. Used in hand made delta plane (made of cardboard) I wish to save 1000 bucks on program card.
But I think I should purchase that one