A LOT of people learn to code on a need to know basis. It may be a common practice too but i really do not think it should be propagated as the thing to do. This is a really horrible approach to coding. Searching for stackoverflow will only lead to you getting a solution to the problem without having any understanding of the problem itself. There is a good chance that if you learn this way, you will find yourself heading back to stackoverflow when the problem arises again and you forget what you did last time.