winemaking

[Catch 22]

John,

Welcome to the board. You sure do have a lot of questions. I think your best bet is to get a book and do a quick read through. I used "The Art of Making Wine" by Andersen/Hull when I started. It is very informative, and simple to follow.
The one thing I would like to comment on is that I would strongly recommend against just letting the juice sit in the bucket to ferment on its own. You are far better off buying a wine yeast from a wine supply store (look in the yellow pages if you don't know of one) than hoping nature takes the proper course. The book I recommended above has a section to get you started immediately if you have some juice and cannot wait to read the whole book. Good Luck.