I don't have holy grail but I do know that tech analysis works & my knowledge might motivate someone to work at it instead of buying just because a company had good earnings.
Before you go ahead and do this I'd really ask myself carefully what you want to get out of it yourself personally.
Helping is great, but as I said before, you have to be really sure your help is going to benefit whomever it is intended for. The sad truth is that most people should not be trading, period. Maybe one way you can help them is to help them figure that out

I once got a group of friends together who were interested in trading. My main motivation was to have fun, so I could talk shop with people that I'm friends with already, and so I could better assimilate the material I was learning. What became painfully obvious after a short time is nobody was willing to invest the appropriate effort. One person opened an account, immediately had some success, and then thought he was the smart guy. He blew out his account two months later (fortunately it was an FX micro account so the damage was minimal). It's sort of like watching Survivor, you see everyone drop out one by one until you're left with maybe one person.
Things like that can work as long as you warn everyone in advance what is most likely to happen, and that to succeed you need to work your tail off. The way I did it was I said that if you guys don't find it working for you, no hard feelings, it's just an experience for you and for me as well. As a result everything was peachy when it inevitably fell apart.
If your main goal is to make money for your charity, you then have to work hard on putting together a good competitive educational program and marketing it. At this point you're running your own business, and people will have expectations from you. As you know it's a sleazy business, many people simply go for high turnover and resort to hard sales tactics: "These seats are going to be gone in just a few days if you don't apply now" (my favorite part is 'apply'
. Keep in mind this will also distract you heavily from your trading, because not only are you teaching but you're also marketing. So I think some soul searching is in order, and having realistic expectations is key.