Make sure the concentrate does not have any type of sorbate as a preservative. We have had customers mistakenly purchase gallons of apple juice to make wine only to find out (After a week of trying to get it to ferment) that it had sorbate in in.
Most bottled Juices that are not refrigerated...
A kit is usually the best way to start. You should probably pick a style of wine that you already know you like the first time. Also, don't use the same plastic bucket for beer and wine, the wine may pick up any beer aromas in the plastic. Glass can be used for both.
Another good thing...