Gotek 6128

[CrookieMonster]

I've never used a Gotek before but what equipment would I need for a 6128?

I'd like an external drive but where's the best place to get one (I've seen some on Amazon yet I'm not sure if any would be suitable).

And exactly which cable is needed, which adapter and what, in essence, needs to be done to get it all up and running?

Hope someone can help! Would it be the same process for a PCW 8256?