I've had a look, it's pretty great stuff. The gamification is a nice plus (the quizz at least, i'm not sure about the "coins" thing ^^). I guess generating content is for this is quite time consuming, but it's a nice goal. I'm not sure if there's a lot of similar websites on the internet, do you have some serious concurrence ? You could post it on the photography stackexchange site (probably in the meta) to ask for some help. I once made a small answer on the role of a beauty dish (<a href="https://is.gd/VHkS7t" rel="nofollow">https://is.gd/VHkS7t</a>) and could help you on the lighting topic.<p>I'd suggest avoiding the "before / after" js thingy for the zoom pictures. Everybody knows what zoom does, and the sliding system only makes sense to me when showing variations of the same image.<p>Make sure to make it ready for internationalization also :)