Love this forum so wanted to share this. Its not a rant but I feel strongly about it. I recently paid $500 to DartDrones for a 1 day class on flying basics and info for my P4. They claim "As seen on Shark Tank" and I indeed did see it there. But when I sent them a poor review and copied in Mark Cuban, the investor, he actually responded that they did not make a deal. Yet the company continues to use this as a marketing ploy. The class was taught by a EMT guy from Central Florida and lifetime RC hobbyist. Great. But they provided NO materials, no copies of their charts (overheads), no written materials, and essentially nothing but my own notes. Which were hard to take because this guy spoke so fast and didn't leave the overheads on the screen for very long. I sent a long letter to the company and have heard nothing back. When I asked the onstructor if there were handouts he said there were not "because every instructor uses their own materials." Huh? The overheads were all stock materials. I would NOT recommend anyone spending money on this. Its a complete waste.