Easy. Read here: openSUSE:Mirror infrastructure - openSUSE.
Caveat: You will have a problem to carry your downloaded stuff home. OSS repo for 11.3 32Bit is approx. 9GB. Updates are 6GB at this time. You will need an external HD drive to store and carry.
Example (full repo 11.1 to 11.3, 188GB):
prompt> cat rsync-distro
# rsync the SuSE distro
rsync -rlpt --exclude-from="/drive/distro-excludelist" -hi --stats \
Add everything not absolutely needed to distro-excludelist.
prompt> cat distro-excludelist