Indeed. I consider myself fairly well informed compared to most of my peers, but the sheer choice of technologies for building modern web apps (responsiveness, other front-end UX considerations) is daunting. I'm trying to build up a list of modern web design/development links for myself, but I'm already lost. The parent comment about "modernizr" made me sigh with frustration: yet another tool/tech I don't know about or have time to learn.
I don't meant to be rude but if you are not familiar with Modernizr and you work with markup; you are probably nowhere near as well informed as you think you are.
