Other posters have replied with some valuable things to keep in mind. I'll add that you need to remember there is probably a difference in age between yourself

Other posters have replied with some valuable things to keep in mind. I'll add that you need to remember there is probably a difference in age between yourself and that of the person (experience and thus knowledge is partly a function of age of course) who posted some mind-blowingly interesting and esoteric bit of information (I'm regularly amazed by the broad range of knowledge by the HNers)