If you know the basic principles of programming then you can always just search for 'how do I _____ in ______' and get your answer quickly.
Very true, however this only works for languages that are just like the languages you already know. So taking a mythical enterprise programmer (no hate mail, please!), he can google for "How do I implement a for loop in Scheme" and get an answer, but of course he may entirely miss the fact that tail recursion is optimized by default and that the idiomatic way to solve his problem would be to write a recursive function.
For this reason, I hope that when Googling things, people take the extra step of just plain reading words. Lots of words. Blog posts, books (online or dead trees), rants in forums, everything.
The limitation of asking a question (whether in Google or StackOverflow or whatever) is that when learning a new way to think about programming, you don't know what question to ask.