Bootloader has been installed...now what ?

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hi folks,

i have built pcb (see picture) fits on uno allow me install bootloader on atmega328/atmega328p. works fine ! based on setup:

https://www.arduino.cc/en/tutorial/arduinotobreadboard

q1: first question: when "push" bootloader atmega328, in order test it, place uno, , upload basic "blink" sketch ... noticed in order successful, when install bootloader, uno board has selected. 

does mean there more 1 bootloader version ? intention installing bootloader, able upload arduino sketch 328, , use on custom pcb.

q2: if there many flavors of bootloader, , if had selected uno, mean in order able upload sketch in newly bootloaded chip, have make arduino believe uno ?

q3: if use wiring in post mentioned above, , upload sketch uno, need install crystal on circuit ? can use internal oscillator ? need set config/fuse ?

thanks,

problem uploading picture ....


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