advice please newbie telescope owner

ive just been bought a celestron powerseeker 114 telescope

i would like to attach a camera to the telescope

what is the best budget
portable camera


and what camera can be connected to the telescope via the
computer,,,,,,,,,,,

my telescope does not have a motor or tracker would i need 1
fittted..???

how does the camera fit on the telescope
does it replace the lens or fit ontop of the lense ( newbie )

thanks
bob