its good to have an older wii, as you will likely be able to install bootmii as boot2 (you will see at a later point).
Go for the softmod any wii guide (link below).
if you would post a short hello in the introduction section you ll be given your first set of useful links.
browse the forum
still have my wiikey1 in my console but of course only use my usb loader etc. just so much nicer, no disc burning, every game is running, nice coverflow effects in wiiflow or cfg loader.
good luck for now