Absolute noob

I got fsx a few months ago and have played around for a while. I have around 50 hours logged on it. So far I can take off, fly, and then land in all the planes, even some ILS landings in the big jets. I'd really like to learn to fly more realistically, and from what I've read, setting the realism settings to "high" won't cut it. I don't know what all this Vx stuff is either, although I know it's an airspeed related to takeoff/landing. I've searched for a while now but can't find anything for absolute beginners at realistic flight. Can anybody point me in the right direction? Sorry for seeming like such an idiot.