Cheney expressly said to prepare each carrot separately. Wash it off with water and a scrub brush, cut off the bad parts, and slowly, slowly push through the juicer. Repeat until all the carrots are juiced. Adding other Things. I usually add an apple for taste.
Same preparation applies.
Rinse it, wash it, cut it up, and juice it. It depends on your taste and desired healing benefits. There are lots of juicing books out. Check them out for more combos and information. Adding UltraClear Plus.