Here's what you do:
Get a good juicer. Don't buy a cheap one. It will break.
Wash fruit and veggies, and cut into pieces that will fit into machine.
Push it through! It's amazing how fast it works.
Depending on how much you are doing, you may need to clean out the internal mesh filter half way through.
Use more watery veg (cucumber, celery) than other veggies.
The more fruit you have, the sweeter it will be.
Yeah ... anything green. Direct quote from Miss Katy. Try the asian vegetable aisle - there is some cool stuff.
Some suggestions (put GREEN in front of everything on this list):
Pineapple (ok, its not green, but close enough)
Parsley (really good for you)
Sprouts - any kind (also really good for you)
Collard or Mustard greens
Herbs like basil, cilantro, or mint - but they can be overpowering
The difference between juicing and blending: Juicing takes out the fiber. Feel free to throw all of this in a really good blender (like a VitaMix), but it was a little bit too thick for me to drink.
DISCLAIMER: Katy Lurtz of Royal Oak, MI taught me everything I know about juicing