how do i work boot disks in case xp home goes down?

how and when would i use the 6 boot disks for xp
home?how and when would i use my xp disk after i
change my booting sequence to cd 1rst?what and
how are all the ways i can work the recovery
console in xp home?please give descriptive
detailed instructions for these three questions
thank-you. soundfresh@yahoo.com