Atmega328 bootloader question?

[kursad]

Hi i am new at microcontroller, I really confused about bootloader

I have one microcontroler project,My code is ready and works with arduino mega. I need to PCB desing so,
I decided to use atmega328 because its compatible with arduino interface.
I will buy a new atmega328 chip its needed arduino bootloader. Am i right?
How can i burn new chip this bootloader?
Where is the bootloader code? How can i find?
In this bootloader can i program atmega328 with USB like an arduino? if it possible is there any schematic or Tutor about this subject? Thank you :-?

 

[PRASAN DUTT RAJU]

If you are working on Arduino IDE then there is you can upload bootloader directly from that. In that case if you have Arduino Mega then it will work as ISP.
Rest is just connect then ICSP pins of both the Mega & Arduino 328.

You can view the steps given at this link- https://www.instructables.com/id/Turn-Your-Arduino-Into-an-ISP/?ALLSTEPS

For any further help reply.

- - - Updated - - -

If you are working on Arduino IDE then there is you can upload bootloader directly from that. In that case if you have Arduino Mega then it will work as ISP.
Rest is just connect then ICSP pins of both the Mega & Arduino 328.

You can view the steps given at this link- http://www.instructables.com/id/Turn-Your-Arduino-Into-an-ISP/?ALLSTEPS

For any further help reply.