setup bigger sd card help

hi guys i was wounding if some one could help me out,

as you now im new to zgemma boxs i have a h2.s with open atv

so im all setup, every thing seams great,

so i have a 4gb micro sd card,plugins/epg/swap/timeshift/recroding
but i want to upgrade to a 64gb so how would i do this? ,,do i need to download every thing again epg/etc/and Initialise again? ??
whats the steps to follow guys
as i said before im a (totalnoob) to all this so if some one could help me or point to a guide that be great thanks

thanks for reply coder,, so i should just wipe out the old sd card ,
put in the new one /initializing/swap file/and then just make sure the paths are set up
is this right ,, what about all my plugins do they need to be saved to sc card as well,
if so how would i check thanks

thanks coder i will give it a go