hello guys im new to the wii hacking world

hello my name is marc just want some help t enjoy my wii dats comin in mail with zelda i kinda understand the whole ackin scene caus ei did for psp for years just wonderin

1) wat would u recommend for me i like(jap games, able to still use the wii store)
2)wats the highest gb card i can use with no probelm? and where to buy
3)how does the whole back up cd thing work?
4)wats the best update to go for
5) say if me new incoming wii is at the latest update can i down grade it?

1) Dunno really, never played Jap games, except ones released in UK. But launch them through Gecko OS for region free.
2) Any I think
3) Backups aren't supported here, and Wii games are DVDs, not CDs
4) For homebrew, 3.2, but really you wont lose much with the latest (4.1)
5) Well, it being a new wii it will be LU64+ serial, which somehow bricks the Wii if its downgraded. So I'd advise against it.

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2) Any I think

Just to point out to OP, you need either HBC or the latest Wii firmware installed to be able to recognise/use SDHC card, aka any SD card 4GB or larger.

Yes, HBC and most homebrew can use SDHC on any firmware, and System Menu 4.0 and 4.1 support SDHC for SD Menu channel loading, and Data Management (copying channels and saves to SD card)