RE: learning without an instructor
Strangely, all you get from a website is advice.
No one on the website can physically stop someone from trying to learn on their own.
In my 2 years of flying, almost none of the other newbies I met would have had a successful first flight (and trashed their airplane) if they had not had an instructor. For that reason, and that a gas-powered trainer is, in fact, a potentially lethal toy, I can't just say live and let live.
I think anyone who wants to try it alone should be discouraged in the harshest tones...
Afterall, it's just advice.