Everyone chill out. As the Mods (of whom I am not one) are more than happy to remind us, there's NO selling goods or services on this forum anyway --and we would all do very well to remember that without their chiming in.
@Dubs, you're right to be cautious about scammers, but please also be cautious about jumping on new members.
@hellkitty915, I'm sorry that you happened to arrive here close on the heels of an unsettling episode with a very clever scammer trying to prey on people desperate for N. With KCN being such a perfect method --fast-acting and reliably lethal-- and yet even less accessible than N, I'm sure you can understand how your OP has raised eyebrows and sent up red flags.
With that said, what is it that you want to know about using KCN? As @Xerxes says, some superficial research will reveal it is most commonly taken orally, and that very little is required, but perhaps you are exploring different questions than that?