Im not an expert, but there are a few tried and true plans that people around here tend to use as the basis for their own plans. Check out Wahaika's "Current recommended program" in the "program" section over at nbelab. You have to sign up because it's private. I'm assuming you're female, but if not, I should warn you that his site allows biological females only.
Your second, and simplest, option is to just take Wonderup enhancement pills and follow Milani's program which is here:
http://www.network54.com/Forum/482052/th...+programme . Lots of people have grown on Wonderup, but it still doesn't have a great record. It seems to fail, as often as it works.
PM is another good option. Chiyomilk's PM program is extremely popular. Nbelab has the clearest and most detailed explanation of her program that I've seen:
http://nbelab.proboards.com/index.cgi?board=nbeprograms&action=display&thread=182 . Checkout her AMAZING results in her massage videos.
BO (bovine ovary) is the most popular non herbal option, but I don't know much about it. You can try going to the "Glandulars" section of this site, and asking who the current experts are, or what the most popular programs are. Between herbs, PM, and BO, BO seems to be the least popular. That doesn't necessarily mean that it's the least effective, but it does mean that there's a lot less relevant info about it.