Hi man,
So, yes it really dose work, I've had enough reports from other people using it that I am confident that it is an effective compound.
Should you use it? Well, honestly I don't know. We do not have enough studies to say that it is safe for young adults who are still developing and growing. It may have no effect, or it may stunt an important growth vector. We just don't know.
I sell it here on this site with PayPal, working on getting debit and credit cards on here but it takes time.
I recommend starting at 1g and seeing how it effects you for 1 week before either staying at that dose or titrating upwards if you are not noticing and benefits. Everyone is different and some people are more sensitive than others.
As to why I didn't start at 1g, well thats because I was guessing that more was better, I am confident that I was wrong in that assertion.