ColoradicalI'll gladly sell bitcoin to anyone if they want no sign up required :)
BE CAREFUL FOLKS, people who are eager to sell bitcoin privately are often scammers, because if they scam you, you have no course of action against them. Stick to etablished exchanges and other methods such as bitcoin atms if you want a more secure transaction.
All they have to do is not send you the bitcoin if you're silly enough to pay beforehand, and there's nothing you can do. This guy may very well be trying to prey upon cryptocurrency newbies and take their money.
Sorry to call you out, it's nothing against you, I don't know you, but I've been deep in the bitcoin and darknet world for years and I see the exact scam that I've described all the time.