The forward helix piercing goes through the outer helix, or pinna, above the tragus, where the helix attaches to the face. This piercing has exploded in popularity over the years, especially done in multiples. You can see this with a simple search for "triple forward helix" on either Pinterest or Tumblr. The triple forward helix piercing became so popular that it was profiled in issue #58 of The Point: The Quarterly Journal of the Association of Professional Piercers.
So, how many can you get? For multiple forward helix piercings, we suggest you come in and talk to one of our piercers to help you to realize your multi-piercing project. How many posts you are able to fit in this small space depends on your anatomy, and not every ear is suited for multiple forward helix piercings. And like other all cartilage piercings, multiple piercings can be done at once on the same ear, but multiple piercings in different ears are best done at least six months apart. You need one ear to sleep on, use to talk on the phone, etc., and getting cartilage pierced in both ears at the same time can be incredibly difficult to heal—if not impossible.
Suggested initial jewelry is usually a 16 gauge press-fit post, which you can get get with anything from a basic, plain ball to ornate gold and diamond ends—and most everything in-between.