you should learn VCDs before u step to DVDs
cause they dont sell discs bigger than 4.7 gigs
yes. use DVD Decrypter http://www.afterdawn.com/articles/archive/small_dvd_2_dvdr.cfm exact images of your DVDs if they are under 4.36 gigs
use a bitrate calculator
just use nero and completely erase the dvd+rw just like a cd-rw
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