question

hi I'm student {windows apllication developper} the last 2 or 3 years i discover that web developing is more wanted or preferable for the next generation . my question is 1st question Is the web development more important than application development ? 2nd question we are student now and we still student over the years ? because all the time we have new language to learn what is your opnion be student all the time and upgrade ourself all time ,or fix to a one developing language . 3 question if i prepare to learn php mysql ,is we obligate to all things about php ? 4 question I found a billions of other tutorial on the web. how we can filter all this web site and download only what we are need (for beginner ,intermediat student) ? 5 question what about asp or asp.net how is the best or preferable(yours opinion) php or asp.net thanks