I need some questiones answered about patches

[EDG0016]

If you burn the psx and the patch to the same cdr. All you have to do is put that cdr in your psx and it will start to play or do you still have to do a swap trick or something else?

Their so many different patches for one game which one should i use? If this helps i only own usa copies

How do you burn games that pass 700mb? Can you just burn the rest to a second cd?